| slovo | definícia |
pentad
(encz) | pentad,pětice n: Zdeněk Brož |
Pentad
(gcide) | Pentad \Pen"tad\, n. [Gr. penta`s penta`dos, a body of five, fr.
pe`nte five.] (Chem.)
Any element, atom, or radical, having a valence of five, or
which can be combined with, substituted for, or compared
with, five atoms of hydrogen or other monad; as, nitrogen is
a pentad in the ammonium compounds.
[1913 Webster]
2. Any grouping of five things.
[PJC] |
Pentad
(gcide) | Pentad \Pen"tad\, a. (Chem.)
Having the valence of a pentad.
[1913 Webster] Pentadactyl |
pentad
(wn) | pentad
n 1: the cardinal number that is the sum of four and one [syn:
five, 5, V, cinque, quint, quintet, fivesome,
quintuplet, pentad, fin, Phoebe, Little Phoebe] |
| | podobné slovo | definícia |
Leptodactylus pentadactylus
(gcide) | Crapaud \Cra*paud"\, n. [Written also crapawd, crapald,
crepaud, etc.] [F. crapaud.]
1. A toad. [Obs.]
[Webster 1913 Suppl.]
2. (Pronounced kr[.a]`p[=o]") As a proper name, {Johnny
Crapaud}, or Crapaud, a nickname for a Frenchman.
[Webster 1913 Suppl.]
3. large toothed frog of South and Central America
(Leptodactylus pentadactylus) resembling the bullfrog.
Syn: South American bullfrog, Leptodactylus pentadactylus.
[WordNet 1.5] |
Pentad
(gcide) | Pentad \Pen"tad\, n. [Gr. penta`s penta`dos, a body of five, fr.
pe`nte five.] (Chem.)
Any element, atom, or radical, having a valence of five, or
which can be combined with, substituted for, or compared
with, five atoms of hydrogen or other monad; as, nitrogen is
a pentad in the ammonium compounds.
[1913 Webster]
2. Any grouping of five things.
[PJC]Pentad \Pen"tad\, a. (Chem.)
Having the valence of a pentad.
[1913 Webster] Pentadactyl |
Pentadactyl
(gcide) | Pentadactyl \Pen`ta*dac"tyl\, Pentadactyle \Pen`ta*dac"tyle\, a.
[Gr. pentada`ktylos with five fingers or toes. See Penta-,
and Dactyl.]
1. (Anat.) Having five digits to the hand or foot.
[1913 Webster]
2. Having five appendages resembling fingers or toes.
[1913 Webster] |
Pentadactyle
(gcide) | Pentadactyl \Pen`ta*dac"tyl\, Pentadactyle \Pen`ta*dac"tyle\, a.
[Gr. pentada`ktylos with five fingers or toes. See Penta-,
and Dactyl.]
1. (Anat.) Having five digits to the hand or foot.
[1913 Webster]
2. Having five appendages resembling fingers or toes.
[1913 Webster] |
Pentadactyloid
(gcide) | Pentadactyloid \Pen`ta*dac"tyl*oid\, a. [Pentadactyl + -oid.]
(Anat.)
Having the form of, or a structure modified from, a
pentadactyl limb.
[1913 Webster] |
Pentadecane
(gcide) | Pentadecane \Pen`ta*dec"ane\ (p[e^]n`t[.a]*d[e^]k"[=a]n), n.
[Penta- + Gr. de`ka ten.] (Chem.)
A hydrocarbon of the paraffin series, (C15H32) found in
petroleum, tar oil, etc., and obtained as a colorless liquid;
-- so called from the fifteen carbon atoms in the molecule.
[1913 Webster] |
Pentadecatoic
(gcide) | Pentadecatoic \Pen`ta*dec`a*to"ic\
(p[e^]n`t[.a]*d[e^]k`[.a]*t[=o]"[i^]k), a. [Penta- +
decatoic.] (Chem.)
Of, pertaining to, or derived from, pentadecane, or
designating an acid related to it.
[1913 Webster] |
pentadecylacatechol
(gcide) | Poison \Poi"son\, n. [F. poison, in Old French also, a potion,
fr. L. potio a drink, draught, potion, a poisonous draught,
fr. potare to drink. See Potable, and cf. Potion.]
1. Any agent which, when introduced into the animal organism,
is capable of producing a morbid, noxious, or deadly
effect upon it; as, morphine is a deadly poison; the
poison of pestilential diseases.
[1913 Webster]
2. That which taints or destroys moral purity or health; as,
the poison of evil example; the poison of sin.
[1913 Webster]
Poison ash. (Bot.)
(a) A tree of the genus Amyris (Amyris balsamifera)
found in the West Indies, from the trunk of which a
black liquor distills, supposed to have poisonous
qualities.
(b) The poison sumac (Rhus venenata). [U. S.]
Poison dogwood (Bot.), poison sumac.
Poison fang (Zool.), one of the superior maxillary teeth of
some species of serpents, which, besides having the cavity
for the pulp, is either perforated or grooved by a
longitudinal canal, at the lower end of which the duct of
the poison gland terminates. See Illust. under Fang.
Poison gland (Biol.), a gland, in animals or plants, which
secretes an acrid or venomous matter, that is conveyed
along an organ capable of inflicting a wound.
Poison hemlock (Bot.), a poisonous umbelliferous plant
(Conium maculatum). See Hemlock.
Poison ivy (Bot.), a poisonous climbing plant (formerly
Rhus Toxicodendron, or Rhus radicans, now classified
as Toxicodendron radicans) of North America. It is
common as a climbing vine, especially found on tree
trunks, or walls, or as a low, spreading vine or as a
shrub. As a low vine it grows well in lightly shaded
areas, recognizable by growing in clusters of three
leaves. Its leaves are trifoliate, rhombic-ovate, and
variously notched. Its form varies slightly from location
to location, leading to some speculation that it may
consist of more than one species. Many people are poisoned
by it, though some appear resistant to its effects.
Touching the leaves may leave a residue of an oil on the
skin, and if not washed off quickly, sensitive areas of
skin become reddened and develop multiple small blisters,
lasting for several days to several weeks, and causing a
persistent itch. The toxic reaction is due to an oil,
present in all parts of the plant except the pollen,
called urushiol, the active component of which is the
compound pentadecylacatechol (according to [a
href="http:]/www.jaxmed.com/articles/Diseases/poison_ivy_dermatitis.htm">Charles
H. Booras). See Poison sumac. It is related to {poison
oak}, and is also called mercury.
Poison nut. (Bot.)
(a) Nux vomica.
(b) The tree which yields this seed ({Strychnos
Nuxvomica}). It is found on the Malabar and Coromandel
coasts.
Poison oak (Bot.), a dermatitis-producing plant often
lumped together with the poison ivy ({Toxicodendron
radicans}) in common terminology, but more properly
distinguished as the more shrubby {Toxicodendron
quercifolium} (syn. Toxicodendron diversilobum), common
in California and Oregon. Opinion varies as to whether the
poison oak and poison ivy are only variants of a single
species. See poison ivy, above.
Poison sac. (Zool.) Same as Poison gland, above. See
Illust. under Fang.
Poison sumac (Bot.), a poisonous shrub formerly considered
to be of the genus Rhus (Rhus venenata), but now
classified as Toxicodendron vernix; -- also called
poison ash, poison dogwood, and poison elder. It has
pinnate leaves on graceful and slender common petioles,
and usually grows in swampy places. Both this plant and
the poison ivy (Toxicodendron radicans, formerly {Rhus
Toxicodendron}) have clusters of smooth greenish white
berries, while the red-fruited species of this genus are
harmless. The tree (Rhus vernicifera) which yields the
celebrated Japan lacquer is almost identical with the
poison sumac, and is also very poisonous. The juice of the
poison sumac also forms a lacquer similar to that of
Japan.
[1913 Webster +PJC]
Syn: Venom; virus; bane; pest; malignity.
Usage: Poison, Venom. Poison usually denotes something
received into the system by the mouth, breath, etc.
Venom is something discharged from animals and
received by means of a wound, as by the bite or sting
of serpents, scorpions, etc. Hence, venom specifically
implies some malignity of nature or purpose.
[1913 Webster] |
Pentadecylic
(gcide) | Pentadecylic \Pen`ta*decyl"ic\
(p[e^]n`t[.a]*d[-e]*s[i^]l"[i^]k), a. [Penta- + decylic.]
(Chem.)
Same as Quindecylic.
[1913 Webster]Quindecylic \Quin`de*cyl"ic\, n. [L. quindecim fifteen + -yl.]
(Chem.)
Pertaining to, or designating, an acid of the fatty acid
series, containing fifteen atoms of carbon; called also
pentadecylic acid.
[1913 Webster] |
pentadecylic
(gcide) | Pentadecylic \Pen`ta*decyl"ic\
(p[e^]n`t[.a]*d[-e]*s[i^]l"[i^]k), a. [Penta- + decylic.]
(Chem.)
Same as Quindecylic.
[1913 Webster]Quindecylic \Quin`de*cyl"ic\, n. [L. quindecim fifteen + -yl.]
(Chem.)
Pertaining to, or designating, an acid of the fatty acid
series, containing fifteen atoms of carbon; called also
pentadecylic acid.
[1913 Webster] |
Pentadelphous
(gcide) | Pentadelphous \Pen`ta*del"phous\ (p[e^]n`t[.a]*d[e^]l"f[u^]s),
a. [Penta- + Gr. 'adelfo`s brother.] (Bot.)
Having the stamens arranged in five clusters, those of each
cluster having their filaments more or less united, as the
flowers of the linden.
[1913 Webster] |
Pentadesma butyracea
(gcide) | Vegetable \Veg`e*ta*ble\, a. [F. v['e]g['e]table growing,
capable of growing, formerly also, as a noun, a vegetable,
from L. vegetabilis enlivening, from vegetare to enliven,
invigorate, quicken, vegetus enlivened, vigorous, active,
vegere to quicken, arouse, to be lively, akin to vigere to be
lively, to thrive, vigil watchful, awake, and probably to E.
wake, v. See Vigil, Wake, v.]
[1913 Webster]
1. Of or pertaining to plants; having the nature of, or
produced by, plants; as, a vegetable nature; vegetable
growths, juices, etc.
[1913 Webster]
Blooming ambrosial fruit
Of vegetable gold. --Milton.
[1913 Webster]
2. Consisting of, or comprising, plants; as, the vegetable
kingdom.
[1913 Webster]
Vegetable alkali (Chem.), an alkaloid.
Vegetable brimstone. (Bot.) See Vegetable sulphur, below.
Vegetable butter (Bot.), a name of several kinds of
concrete vegetable oil; as that produced by the Indian
butter tree, the African shea tree, and the {Pentadesma
butyracea}, a tree of the order Guttiferae, also
African. Still another kind is pressed from the seeds of
cocoa (Theobroma).
Vegetable flannel, a textile material, manufactured in
Germany from pine-needle wool, a down or fiber obtained
from the leaves of the Pinus sylvestris.
Vegetable ivory. See Ivory nut, under Ivory.
Vegetable jelly. See Pectin.
Vegetable kingdom. (Nat. Hist.) See the last Phrase, below.
Vegetable leather.
(a) (Bot.) A shrubby West Indian spurge ({Euphorbia
punicea}), with leathery foliage and crimson bracts.
(b) See Vegetable leather, under Leather.
Vegetable marrow (Bot.), an egg-shaped gourd, commonly
eight to ten inches long. It is noted for the very tender
quality of its flesh, and is a favorite culinary vegetable
in England. It has been said to be of Persian origin, but
is now thought to have been derived from a form of the
American pumpkin.
Vegetable oyster (Bot.), the oyster plant. See under
Oyster.
Vegetable parchment, papyrine.
Vegetable sheep (Bot.), a white woolly plant ({Raoulia
eximia}) of New Zealand, which grows in the form of large
fleecy cushions on the mountains.
Vegetable silk, a cottonlike, fibrous material obtained
from the coating of the seeds of a Brazilian tree
(Chorisia speciosa). It is used for various purposes, as
for stuffing cushions, and the like, but is incapable of
being spun on account of a want of cohesion among the
fibers.
Vegetable sponge. See 1st Loof.
Vegetable sulphur, the fine and highly inflammable spores
of the club moss (Lycopodium clavatum); witch meal.
Vegetable tallow, a substance resembling tallow, obtained
from various plants; as, Chinese vegetable tallow,
obtained from the seeds of the tallow tree. {Indian
vegetable tallow} is a name sometimes given to piney
tallow.
Vegetable wax, a waxy excretion on the leaves or fruits of
certain plants, as the bayberry.
[1913 Webster]
[1913 Webster]
Vegetable kingdom (Nat. Hist.), that primary division of
living things which includes all plants. The classes of
the vegetable kingdom have been grouped differently by
various botanists. The following is one of the best of the
many arrangements of the principal subdivisions.
[1913 Webster] I. Phaenogamia (called also
Phanerogamia). Plants having distinct flowers and true
seeds. [ 1. Dicotyledons (called also Exogens). --
Seeds with two or more cotyledons. Stems with the pith,
woody fiber, and bark concentrically arranged. Divided
into two subclasses: Angiosperms, having the woody fiber
interspersed with dotted or annular ducts, and the seeds
contained in a true ovary; Gymnosperms, having few or no
ducts in the woody fiber, and the seeds naked. 2.
Monocotyledons (called also Endogens). -- Seeds with
single cotyledon. Stems with slender bundles of woody
fiber not concentrically arranged, and with no true bark.]
[1913 Webster] II. Cryptogamia. Plants without true
flowers, and reproduced by minute spores of various kinds,
or by simple cell division. [ 1. Acrogens. -- Plants
usually with distinct stems and leaves, existing in two
alternate conditions, one of which is nonsexual and
sporophoric, the other sexual and oophoric. Divided into
Vascular Acrogens, or Pteridophyta, having the
sporophoric plant conspicuous and consisting partly of
vascular tissue, as in Ferns, Lycopods, and Equiseta, and
Cellular Acrogens, or Bryophyta, having the sexual
plant most conspicuous, but destitute of vascular tissue,
as in Mosses and Scale Mosses. 2. Thallogens. -- Plants
without distinct stem and leaves, consisting of a simple
or branched mass of cellular tissue, or reduced to a
single cell. Reproduction effected variously. Divided into
Algae, which contain chlorophyll or its equivalent, and
which live upon air and water, and Fungi, which contain
no chlorophyll, and live on organic matter. (Lichens are
now believed to be fungi parasitic on included algae.]
[1913 Webster]
Note: Many botanists divide the Phaenogamia primarily into
Gymnosperms and Angiosperms, and the latter into
Dicotyledons and Monocotyledons. Others consider
Pteridophyta and Bryophyta to be separate classes.
Thallogens are variously divided by different writers,
and the places for diatoms, slime molds, and stoneworts
are altogether uncertain.
[1913 Webster] For definitions, see these names in the
Vocabulary.
[1913 Webster] |
leptodactylus pentadactylus
(wn) | Leptodactylus pentadactylus
n 1: large toothed frog of South America and Central America
resembling the bullfrog [syn: crapaud, {South American
bullfrog}, Leptodactylus pentadactylus] |
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