| slovo | definícia |
atomic number 7
(wn) | atomic number 7
n 1: a common nonmetallic element that is normally a colorless
odorless tasteless inert diatomic gas; constitutes 78
percent of the atmosphere by volume; a constituent of all
living tissues [syn: nitrogen, N, atomic number 7] |
| | podobné slovo | definícia |
atomic number 70
(wn) | atomic number 70
n 1: a soft silvery metallic element; a rare earth of the
lanthanide series; it occurs in gadolinite and monazite and
xenotime [syn: ytterbium, Yb, atomic number 70] |
atomic number 71
(wn) | atomic number 71
n 1: a trivalent metallic element of the rare earth group;
usually occurs in association with yttrium [syn:
lutetium, lutecium, Lu, atomic number 71] |
atomic number 72
(wn) | atomic number 72
n 1: a grey tetravalent metallic element that resembles
zirconium chemically and is found in zirconium minerals;
used in filaments for its ready emission of electrons [syn:
hafnium, Hf, atomic number 72] |
atomic number 73
(wn) | atomic number 73
n 1: a hard grey lustrous metallic element that is highly
resistant to corrosion; occurs in niobite and fergusonite
and tantalite [syn: tantalum, Ta, atomic number 73] |
atomic number 74
(wn) | atomic number 74
n 1: a heavy grey-white metallic element; the pure form is used
mainly in electrical applications; it is found in several
ores including wolframite and scheelite [syn: tungsten,
wolfram, W, atomic number 74] |
atomic number 75
(wn) | atomic number 75
n 1: a rare heavy polyvalent metallic element that resembles
manganese chemically and is used in some alloys; is
obtained as a by-product in refining molybdenum [syn:
rhenium, Re, atomic number 75] |
atomic number 76
(wn) | atomic number 76
n 1: a hard brittle blue-grey or blue-black metallic element
that is one of the platinum metals; the heaviest metal
known [syn: osmium, Os, atomic number 76] |
atomic number 77
(wn) | atomic number 77
n 1: a heavy brittle metallic element of the platinum group;
used in alloys; occurs in natural alloys with platinum or
osmium [syn: iridium, Ir, atomic number 77] |
atomic number 78
(wn) | atomic number 78
n 1: a heavy precious metallic element; grey-white and resistant
to corroding; occurs in some nickel and copper ores and is
also found native in some deposits [syn: platinum, Pt,
atomic number 78] |
atomic number 79
(wn) | atomic number 79
n 1: a soft yellow malleable ductile (trivalent and univalent)
metallic element; occurs mainly as nuggets in rocks and
alluvial deposits; does not react with most chemicals but
is attacked by chlorine and aqua regia [syn: gold, Au,
atomic number 79] |
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