| podobné slovo | definícia |
atomic number 1
(wn) | atomic number 1
n 1: a nonmetallic univalent element that is normally a
colorless and odorless highly flammable diatomic gas; the
simplest and lightest and most abundant element in the
universe [syn: hydrogen, H, atomic number 1] |
atomic number 10
(wn) | atomic number 10
n 1: a colorless odorless gaseous element that give a red glow
in a vacuum tube; one of the six inert gasses; occurs in
the air in small amounts [syn: neon, Ne, {atomic number
10}] |
atomic number 100
(wn) | atomic number 100
n 1: a radioactive transuranic metallic element produced by
bombarding plutonium with neutrons [syn: fermium, Fm,
atomic number 100] |
atomic number 101
(wn) | atomic number 101
n 1: a radioactive transuranic element synthesized by bombarding
einsteinium with alpha particles (Md is the current symbol
for mendelevium but Mv was formerly the symbol) [syn:
mendelevium, Md, Mv, atomic number 101] |
atomic number 102
(wn) | atomic number 102
n 1: a radioactive transuranic element synthesized by bombarding
curium with carbon ions; 7 isotopes are known [syn:
nobelium, No, atomic number 102] |
atomic number 103
(wn) | atomic number 103
n 1: a radioactive transuranic element synthesized from
californium [syn: lawrencium, Lr, atomic number 103] |
atomic number 104
(wn) | atomic number 104
n 1: a radioactive transuranic element which has been
synthesized [syn: rutherfordium, Rf, unnilquadium,
Unq, element 104, atomic number 104] |
atomic number 105
(wn) | atomic number 105
n 1: a transuranic element [syn: dubnium, Db, hahnium,
element 105, atomic number 105] |
atomic number 106
(wn) | atomic number 106
n 1: a transuranic element [syn: seaborgium, Sg, {element
106}, atomic number 106] |
atomic number 107
(wn) | atomic number 107
n 1: a transuranic element [syn: bohrium, Bh, element 107,
atomic number 107] |
atomic number 108
(wn) | atomic number 108
n 1: a radioactive transuranic element [syn: hassium, Hs,
element 108, atomic number 108] |
atomic number 109
(wn) | atomic number 109
n 1: a radioactive transuranic element [syn: meitnerium, Mt,
element 109, atomic number 109] |
atomic number 11
(wn) | atomic number 11
n 1: a silvery soft waxy metallic element of the alkali metal
group; occurs abundantly in natural compounds (especially
in salt water); burns with a yellow flame and reacts
violently in water; occurs in sea water and in the mineral
halite (rock salt) [syn: sodium, Na, {atomic number
11}] |
atomic number 110
(wn) | atomic number 110
n 1: a radioactive transuranic element [syn: darmstadtium,
Ds, element 110, atomic number 110] |
atomic number 111
(wn) | atomic number 111
n 1: a radioactive transuranic element [syn: roentgenium,
Rg, element 111, atomic number 111] |
atomic number 112
(wn) | atomic number 112
n 1: a radioactive transuranic element [syn: ununbium, Uub,
element 112, atomic number 112] |
atomic number 113
(wn) | atomic number 113
n 1: a radioactive transuranic element [syn: ununtrium, Uut,
element 113, atomic number 113] |
atomic number 114
(wn) | atomic number 114
n 1: a radioactive transuranic element [syn: ununquadium,
Uuq, element 114, atomic number 114] |
atomic number 115
(wn) | atomic number 115
n 1: a radioactive transuranic element [syn: ununpentium,
Uup, element 115, atomic number 115] |
atomic number 116
(wn) | atomic number 116
n 1: a radioactive transuranic element [syn: ununhexium,
Uuh, element 116, atomic number 116] |
atomic number 12
(wn) | atomic number 12
n 1: a light silver-white ductile bivalent metallic element; in
pure form it burns with brilliant white flame; occurs
naturally only in combination (as in magnesite and dolomite
and carnallite and spinel and olivine) [syn: magnesium,
Mg, atomic number 12] |
atomic number 13
(wn) | atomic number 13
n 1: a silvery ductile metallic element found primarily in
bauxite [syn: aluminum, aluminium, Al, {atomic number
13}] |
atomic number 14
(wn) | atomic number 14
n 1: a tetravalent nonmetallic element; next to oxygen it is the
most abundant element in the earth's crust; occurs in clay
and feldspar and granite and quartz and sand; used as a
semiconductor in transistors [syn: silicon, Si, {atomic
number 14}] |
atomic number 15
(wn) | atomic number 15
n 1: a multivalent nonmetallic element of the nitrogen family
that occurs commonly in inorganic phosphate rocks and as
organic phosphates in all living cells; is highly reactive
and occurs in several allotropic forms [syn: phosphorus,
P, atomic number 15] |
atomic number 16
(wn) | atomic number 16
n 1: an abundant tasteless odorless multivalent nonmetallic
element; best known in yellow crystals; occurs in many
sulphide and sulphate minerals and even in native form
(especially in volcanic regions) [syn: sulfur, S,
sulphur, atomic number 16] |
atomic number 17
(wn) | atomic number 17
n 1: a common nonmetallic element belonging to the halogens;
best known as a heavy yellow irritating toxic gas; used to
purify water and as a bleaching agent and disinfectant;
occurs naturally only as a salt (as in sea water) [syn:
chlorine, Cl, atomic number 17] |
atomic number 18
(wn) | atomic number 18
n 1: a colorless and odorless inert gas; one of the six inert
gases; comprises approximately 1% of the earth's atmosphere
[syn: argon, Ar, atomic number 18] |
atomic number 19
(wn) | atomic number 19
n 1: a light soft silver-white metallic element of the alkali
metal group; oxidizes rapidly in air and reacts violently
with water; is abundant in nature in combined forms
occurring in sea water and in carnallite and kainite and
sylvite [syn: potassium, K, atomic number 19] |
atomic number 2
(wn) | atomic number 2
n 1: a very light colorless element that is one of the six inert
gasses; the most difficult gas to liquefy; occurs in
economically extractable amounts in certain natural gases
(as those found in Texas and Kansas) [syn: helium, He,
atomic number 2] |
atomic number 20
(wn) | atomic number 20
n 1: a white metallic element that burns with a brilliant light;
the fifth most abundant element in the earth's crust; an
important component of most plants and animals [syn:
calcium, Ca, atomic number 20] |
atomic number 21
(wn) | atomic number 21
n 1: a white trivalent metallic element; sometimes classified in
the rare earth group; occurs in the Scandinavian mineral
thortveitite [syn: scandium, Sc, atomic number 21] |
atomic number 22
(wn) | atomic number 22
n 1: a light strong grey lustrous corrosion-resistant metallic
element used in strong lightweight alloys (as for airplane
parts); the main sources are rutile and ilmenite [syn:
titanium, Ti, atomic number 22] |
atomic number 23
(wn) | atomic number 23
n 1: a soft silvery white toxic metallic element used in steel
alloys; it occurs in several complex minerals including
carnotite and vanadinite [syn: vanadium, V, {atomic
number 23}] |
atomic number 24
(wn) | atomic number 24
n 1: a hard brittle multivalent metallic element; resistant to
corrosion and tarnishing [syn: chromium, Cr, {atomic
number 24}] |
atomic number 25
(wn) | atomic number 25
n 1: a hard brittle grey polyvalent metallic element that
resembles iron but is not magnetic; used in making steel;
occurs in many minerals [syn: manganese, Mn, {atomic
number 25}] |
atomic number 26
(wn) | atomic number 26
n 1: a heavy ductile magnetic metallic element; is silver-white
in pure form but readily rusts; used in construction and
tools and armament; plays a role in the transport of oxygen
by the blood [syn: iron, Fe, atomic number 26] |
atomic number 27
(wn) | atomic number 27
n 1: a hard ferromagnetic silver-white bivalent or trivalent
metallic element; a trace element in plant and animal
nutrition [syn: cobalt, Co, atomic number 27] |
atomic number 28
(wn) | atomic number 28
n 1: a hard malleable ductile silvery metallic element that is
resistant to corrosion; used in alloys; occurs in
pentlandite and smaltite and garnierite and millerite [syn:
nickel, Ni, atomic number 28] |
atomic number 29
(wn) | atomic number 29
n 1: a ductile malleable reddish-brown corrosion-resistant
diamagnetic metallic element; occurs in various minerals
but is the only metal that occurs abundantly in large
masses; used as an electrical and thermal conductor [syn:
copper, Cu, atomic number 29] |
atomic number 3
(wn) | atomic number 3
n 1: a soft silver-white univalent element of the alkali metal
group; the lightest metal known; occurs in several minerals
[syn: lithium, Li, atomic number 3] |
atomic number 30
(wn) | atomic number 30
n 1: a bluish-white lustrous metallic element; brittle at
ordinary temperatures but malleable when heated; used in a
wide variety of alloys and in galvanizing iron; it occurs
naturally as zinc sulphide in zinc blende [syn: zinc,
Zn, atomic number 30] |
atomic number 31
(wn) | atomic number 31
n 1: a rare silvery (usually trivalent) metallic element;
brittle at low temperatures but liquid above room
temperature; occurs in trace amounts in bauxite and zinc
ores [syn: gallium, Ga, atomic number 31] |
atomic number 32
(wn) | atomic number 32
n 1: a brittle grey crystalline element that is a semiconducting
metalloid (resembling silicon) used in transistors; occurs
in germanite and argyrodite [syn: germanium, Ge,
atomic number 32] |
atomic number 33
(wn) | atomic number 33
n 1: a very poisonous metallic element that has three allotropic
forms; arsenic and arsenic compounds are used as herbicides
and insecticides and various alloys; found in arsenopyrite
and orpiment and realgar [syn: arsenic, As, {atomic
number 33}] |
atomic number 34
(wn) | atomic number 34
n 1: a toxic nonmetallic element related to sulfur and
tellurium; occurs in several allotropic forms; a stable
grey metallike allotrope conducts electricity better in the
light than in the dark and is used in photocells; occurs in
sulfide ores (as pyrite) [syn: selenium, Se, {atomic
number 34}] |
atomic number 35
(wn) | atomic number 35
n 1: a nonmetallic heavy volatile corrosive dark brown liquid
element belonging to the halogens; found in sea water [syn:
bromine, Br, atomic number 35] |
atomic number 36
(wn) | atomic number 36
n 1: a colorless element that is one of the six inert gasses;
occurs in trace amounts in air [syn: krypton, Kr,
atomic number 36] |
atomic number 37
(wn) | atomic number 37
n 1: a soft silvery metallic element of the alkali metal group;
burns in air and reacts violently in water; occurs in
carnallite and lepidolite and pollucite [syn: rubidium,
Rb, atomic number 37] |
atomic number 38
(wn) | atomic number 38
n 1: a soft silver-white or yellowish metallic element of the
alkali metal group; turns yellow in air; occurs in
celestite and strontianite [syn: strontium, Sr, {atomic
number 38}] |
atomic number 39
(wn) | atomic number 39
n 1: a silvery metallic element that is common in rare-earth
minerals; used in magnesium and aluminum alloys [syn:
yttrium, Y, atomic number 39] |
atomic number 4
(wn) | atomic number 4
n 1: a light strong brittle grey toxic bivalent metallic element
[syn: beryllium, Be, glucinium, atomic number 4] |
atomic number 40
(wn) | atomic number 40
n 1: a lustrous grey strong metallic element resembling
titanium; it is used in nuclear reactors as a neutron
absorber; it occurs in baddeleyite but is obtained chiefly
from zircon [syn: zirconium, Zr, atomic number 40] |
atomic number 41
(wn) | atomic number 41
n 1: a soft grey ductile metallic element used in alloys; occurs
in niobite; formerly called columbium [syn: niobium,
Nb, atomic number 41] |
atomic number 42
(wn) | atomic number 42
n 1: a polyvalent metallic element that resembles chromium and
tungsten in its properties; used to strengthen and harden
steel [syn: molybdenum, Mo, atomic number 42] |
atomic number 43
(wn) | atomic number 43
n 1: a crystalline metallic element not found in nature; occurs
as one of the fission products of uranium [syn:
technetium, Tc, atomic number 43] |
atomic number 44
(wn) | atomic number 44
n 1: a rare polyvalent metallic element of the platinum group;
it is found associated with platinum [syn: ruthenium,
Ru, atomic number 44] |
atomic number 45
(wn) | atomic number 45
n 1: a white hard metallic element that is one of the platinum
group and is found in platinum ores; used in alloys with
platinum [syn: rhodium, Rh, atomic number 45] |
atomic number 46
(wn) | atomic number 46
n 1: a silver-white metallic element of the platinum group that
resembles platinum; occurs in some copper and nickel ores;
does not tarnish at ordinary temperatures and is used
(alloyed with gold) in jewelry [syn: palladium, Pd,
atomic number 46] |
atomic number 47
(wn) | atomic number 47
n 1: a soft white precious univalent metallic element having the
highest electrical and thermal conductivity of any metal;
occurs in argentite and in free form; used in coins and
jewelry and tableware and photography [syn: silver, Ag,
atomic number 47] |
atomic number 48
(wn) | atomic number 48
n 1: a soft bluish-white ductile malleable toxic bivalent
metallic element; occurs in association with zinc ores
[syn: cadmium, Cd, atomic number 48] |
atomic number 49
(wn) | atomic number 49
n 1: a rare soft silvery metallic element; occurs in small
quantities in sphalerite [syn: indium, In, {atomic
number 49}] |
atomic number 5
(wn) | atomic number 5
n 1: a trivalent metalloid element; occurs both in a hard black
crystal and in the form of a yellow or brown powder [syn:
boron, B, atomic number 5] |
atomic number 50
(wn) | atomic number 50
n 1: a silvery malleable metallic element that resists
corrosion; used in many alloys and to coat other metals to
prevent corrosion; obtained chiefly from cassiterite where
it occurs as tin oxide [syn: tin, Sn, {atomic number
50}] |
atomic number 51
(wn) | atomic number 51
n 1: a metallic element having four allotropic forms; used in a
wide variety of alloys; found in stibnite [syn: antimony,
Sb, atomic number 51] |
atomic number 52
(wn) | atomic number 52
n 1: a brittle silver-white metalloid element that is related to
selenium and sulfur; it is used in alloys and as a
semiconductor; occurs mainly as tellurides in ores of
copper and nickel and silver and gold [syn: tellurium,
Te, atomic number 52] |
atomic number 53
(wn) | atomic number 53
n 1: a nonmetallic element belonging to the halogens; used
especially in medicine and photography and in dyes; occurs
naturally only in combination in small quantities (as in
sea water or rocks) [syn: iodine, iodin, I, {atomic
number 53}] |
atomic number 54
(wn) | atomic number 54
n 1: a colorless odorless inert gaseous element occurring in the
earth's atmosphere in trace amounts [syn: xenon, Xe,
atomic number 54] |
atomic number 55
(wn) | atomic number 55
n 1: a soft silver-white ductile metallic element (liquid at
normal temperatures); the most electropositive and alkaline
metal [syn: cesium, caesium, Cs, atomic number 55] |
atomic number 56
(wn) | atomic number 56
n 1: a soft silvery metallic element of the alkali earth group;
found in barite [syn: barium, Ba, atomic number 56] |
atomic number 57
(wn) | atomic number 57
n 1: a white soft metallic element that tarnishes readily;
occurs in rare earth minerals and is usually classified as
a rare earth [syn: lanthanum, La, atomic number 57] |
atomic number 58
(wn) | atomic number 58
n 1: a ductile grey metallic element of the lanthanide series;
used in lighter flints; the most abundant of the rare-earth
group [syn: cerium, Ce, atomic number 58] |
atomic number 59
(wn) | atomic number 59
n 1: a soft yellowish-white trivalent metallic element of the
rare earth group; can be recovered from bastnasite or
monazite by an ion-exchange process [syn: praseodymium,
Pr, atomic number 59] |
atomic number 6
(wn) | atomic number 6
n 1: an abundant nonmetallic tetravalent element occurring in
three allotropic forms: amorphous carbon and graphite and
diamond; occurs in all organic compounds [syn: carbon,
C, atomic number 6] |
atomic number 60
(wn) | atomic number 60
n 1: a yellow trivalent metallic element of the rare earth
group; occurs in monazite and bastnasite in association
with cerium and lanthanum and praseodymium [syn:
neodymium, Nd, atomic number 60] |
atomic number 61
(wn) | atomic number 61
n 1: a soft silvery metallic element of the rare earth group
having no stable isotope; was discovered in radioactive
form as a fission product of uranium [syn: promethium,
Pm, atomic number 61] |
atomic number 62
(wn) | atomic number 62
n 1: a grey lustrous metallic element of the rare earth group;
is used in special alloys; occurs in monazite and
bastnasite [syn: samarium, Sm, atomic number 62] |
atomic number 63
(wn) | atomic number 63
n 1: a bivalent and trivalent metallic element of the rare earth
group [syn: europium, Eu, atomic number 63] |
atomic number 64
(wn) | atomic number 64
n 1: a ductile silvery-white ductile ferromagnetic trivalent
metallic element of the rare earth group [syn:
gadolinium, Gd, atomic number 64] |
atomic number 65
(wn) | atomic number 65
n 1: a metallic element of the rare earth group; used in lasers;
occurs in apatite and monazite and xenotime and ytterbite
[syn: terbium, Tb, atomic number 65] |
atomic number 66
(wn) | atomic number 66
n 1: a trivalent metallic element of the rare earth group; forms
compounds that are highly magnetic [syn: dysprosium,
Dy, atomic number 66] |
atomic number 67
(wn) | atomic number 67
n 1: a trivalent metallic element of the rare earth group;
occurs together with yttrium; forms highly magnetic
compounds [syn: holmium, Ho, atomic number 67] |