Pycnogonida Pyc`no·gon"i·da noun plural [ New Latin , from Greek ... thick crowded + ... knee.]
(Zoology) A class of marine arthropods in which the body is small and thin, and the eight legs usually very long; -- called also Pantopoda . » The abdomen is rudimentary, and the triangular mouth is at the end of a tubular proboscis. Many of them live at great depths in the sea, and the largest of them measure two feet across the extended legs.
Pycnometer Pyc·nom"e·ter noun [ Greek ... dense, compact +
-meter .]
(Physics) A specific gravity bottle; a standard flask for measuring and comparing the densities of liquids. [ Also written
pyknometer .]
Pycnostyle Pyc"no·style adjective [ Greek ... with the pillars close together; ... close + ... a column, pillar: confer French
pycnostyle .]
(Anc. Arch.) See under Intercolumniation . -
noun A pycnostyle colonnade.
Pye Pye noun See 2d Pie (b) .
Pyebald Pye"bald` adjective See Piebald .
Pyelitis Py`e·li"tis noun [ Greek basin +
- itis .]
(Medicine) Inflammation of the pelvis of the kidney.
Pyemia Py·e"mi·a noun (Medicine) See PyÆmia .
Pyet Py"et noun A magpie; a piet. [ Prov. Eng.]
Here cometh the worthy prelate as pert as a pyet .
Sir W. Scott.
Pygal Py"gal adjective [ Greek ... the rump.]
(Anat.) Situated in the region of the rump, or posterior end of the backbone; -- applied especially to the posterior median plates in the carapace of chelonians.
Pygarg Py"garg Py*gar"gus }[ Latin pygargus , Greek ..., literally, white rump; ... the rump + white: confer French pygargue .] 1. (Zoology) A quadruped, probably the addax, an antelope having a white rump. Deut. xiv. 5. 2. (Zoology) (a) The female of the hen harrier. (b) The sea eagle.
Pygidium Py·gid"i·um noun ;
plural Pygidia . [ New Latin , from Greek ..., dim. of ... the rump.]
(Zoology) The caudal plate of trilobites, crustacean, and certain insects. See Illust. of Limulus and Trilobite .
Pygmy Pyg"my noun ;
plural Pygmies . [ Latin
pygmaeus , Greek ..., from ... the fist, a measure of length, the distance from the elbow to the knuckles, about 131 inches. Confer
Pugnacious ,
Fist .] [ Written also
pigmy .]
1. (Class. Myth.) One of a fabulous race of dwarfs who waged war with the cranes, and were destroyed. 2. Hence, a short, insignificant person; a dwarf. Pygmies are pygmies still, though perched on Alps.
And pyramids are pyramids in vales.
Young.
Pygmy Pyg"my noun One of a race of Central African Negritos found chiefly in the great forests of the equatorial belt. THey are the shortest of known races, the adults ranging from less than four to about five feet in stature. They are timid and shy, dwelling in the recesses of the forests, though often on good terms with neighboring Negroes.
Pygmy, Pygmean Pyg"my, Pyg·me"an adjective [ Latin
pygmaeus . See
Pygmy .]
Of or pertaining to a pygmy; resembling a pygmy or dwarf; dwarfish; very small. " Like that
Pygmean race."
Milton. Pygmy antelope (Zoology) ,
the kleeneboc. --
Pygmy goose (Zoology) ,
any species of very small geese of the genus Nettapus , native of Africa, India, and Australia. --
Pygmy owl (Zoology) ,
the gnome. --
Pygmy parrot (Zoology) ,
any one of several species of very small green parrots ( Nasiternæ ), native of New Guinea and adjacent islands. They are not larger than sparrows.
Pygobranchia Py`go·bran"chi·a noun plural [ New Latin , from Greek
pugh` the rump + ... a gill.]
(Zoology) A division of opisthobranchiate mollusks having the branchiæ in a wreath or group around the anal opening, as in the genus Doris.
Pygopod Py"go·pod noun [ Greek
pygh` rump +
-pod .]
1. (Zoology) One of the Pygopodes. 2. (Zoology) Any species of serpentiform lizards of the family Pygopodidæ , which have rudimentary hind legs near the anal cleft, but lack fore legs.
Pygopodes Py·gop"o·des noun plural [ New Latin ]
(Zoology) A division of swimming birds which includes the grebes, divers, auks, etc., in which the legs are placed far back.
Pygopodous Py·gop"o·dous adjective (Zoology) Of or pertaining to the Pygopodes.
Pygostyle Py"go·style noun [ Greek
pygh` the rump + ... a pillar.]
(Anat.) The plate of bone which forms the posterior end of the vertebral column in most birds; the plowshare bone; the vomer. It is formed by the union of a number of the last caudal vertebræ, and supports the uropigium.
Pyin Py"in noun [ Greek ... pus.]
(Physiol. (Chemistry) An albuminoid constituent of pus, related to mucin, possibly a mixture of substances rather than a single body.
Pyjama Py·ja"ma noun [ Hind.
pāe- jāma , literally, leg clothing.]
In India and Persia, thin loose trowsers or drawers; in Europe and America, drawers worn at night, or a kind of nightdress with legs. [ Written also
paijama .]
Pyjamas, Pajamas Py·ja"mas, Pa·ja"mas noun plural A garment, similar to the Oriental pyjama (which see), adopted among Europeans, Americans, and other Occidentals, for wear in the dressing room and during sleep; also, a suit of drawers and blouse for such wear.
Pykar Pyk"ar noun An ancient English fishing boat.
Pyla Py"la noun ;
plural Latin
Pylæ , English
Pylas . [ New Latin , from Greek ... an entrance.]
(Anat.) The passage between the iter and optocœle in the brain. B. G. Wilder.
Pylagore Pyl"a·gore noun [ Greek ...; ... Pylæ, or Thermopylæ, where the Amphictyonic council met + ... to assemble: confer French
pylagore .]
(Gr. Antiq.) a deputy of a State at the Amphictyonic council.
Pylangium Py·lan"gi·um noun ;
plural Pylangia [ New Latin , from Greek ... an entrance + ... a vessel.]
(Anat.) The first and undivided part of the aortic trunk in the amphibian heart. --
Py*lan"gi*al adjective
Pylon Py"lon noun [ New Latin , from Greek ... a gateway.]
(a) A low tower, having a truncated pyramidal form, and flanking an ancient Egyptian gateway. Massive pylons adorned with obelisks in front.
J. W. Draper. (b) An Egyptian gateway to a large building (with or without flanking towers).
Pylon Py"lon noun 1. A tower, commonly of steelwork, for supporting either end of a wire, as for a telegraph line, over a long span. 2. (Aëronautics) (a) Formerly, a starting derrick (the use of which is now abandoned) for an aëroplane. (b) A post, tower, or the like, as on an aërodrome, or flying ground, serving to bound or mark a prescribed course of flight.
Pyloric Py·lor"ic adjective [ Confer French
pylorique .]
(Anat.) Of, pertaining to, or in the region of, the pylorus; as, the pyloric end of the stomach.
Pylorus Py·lo"rus noun ;
plural Pylori . [ Latin , from Greek ... pylorus, gate keeper; ... a gate + ... watcher, guardian.]
(Anat.) (a) The opening from the stomach into the intestine. (b) A posterior division of the stomach in some invertebrates.
Pyne Pyne noun & v. See Pine . [ Obsolete]
Chaucer.
Pynoun Py·noun" noun A pennant. [ Obsolete]
Chaucer.
Pyocyanin Py`o·cy"a·nin noun [ Greek ... pus + ... dark blue.]
(Physiol. (Chemistry) A blue coloring matter found in the pus from old sores, supposed to be formed through the agency of a species of bacterium ( Bacillus pyocyaneus ).
Pyogenic Py`o·gen"ic adjective [ Greek ... pus + root of ... to be born.]
(Medicine) Producing or generating pus.
Pyoid Py"oid adjective [ Greek ... pus + -
- oid .]
(Medicine) Of or pertaining to pus; of the nature of, or like, pus. Pyoid corpuscles (Medicine) ,
cells of a size larger than pus corpuscles, containing two or more of the latter.
Pyopneumothorax Py`op·neu`mo·tho"rax noun [ Greek ... pus + English
pneumothorax .]
(Medicine) Accumulation of air, or other gas, and of pus, in the pleural cavity.
Pyot Py"ot noun (Zoology) The magpie. See Piet .
Pyoxanthose Py`o·xan"those noun [ Greek ... pus + ... yellow.]
(Physiol. (Chemistry) A greenish yellow crystalline coloring matter found with pyocyanin in pus.
Pyracanth Pyr"a·canth noun [ Greek ... fire + ... a thorn, prickly plant.]
(Botany) The evergreen thorn ( Cratægus Pyracantha ), a shrub native of Europe.
Pyral Py"ral adjective Of or pertaining to a pyre. [ R.]
Pyralid Pyr"a·lid noun [ Latin
pyralis ,
-idis , a kind of winged insect.]
(Zoology) Any moth of the family Pyralidæ . The species are numerous and mostly small, but some of them are very injurious, as the bee moth, meal moth, hop moth, and clover moth.
Pyramid Pyr"a·mid noun [ Latin
pyramis ,
-idis , from Greek ..., ..., of Egyptian origin: confer French
pyramide .]
1. A solid body standing on a triangular, square, or polygonal base, and terminating in a point at the top; especially, a structure or edifice of this shape. 2. (Geom.) A solid figure contained by a plane rectilineal figure as base and several triangles which have a common vertex and whose bases are sides of the base. 3. plural (Billiards) The game of pool in which the balls are placed in the form of a triangle at spot. [ Eng.]
Altitude of a pyramid (Geom.) ,
the perpendicular distance from the vertex to the plane of the base. --
Axis of a pyramid (Geom.) ,
a straight line drawn from the vertex to the center of the base. --
Earth pyramid .
(Geol.) See Earth pillars , under Earth . --
Right pyramid (Geom.) a pyramid whose axis is perpendicular to the base.
Pyramid Pyr"a·mid intransitive verb (Speculation) To enlarge one's holding or interest in a series of operations on a continued rise or decline by using the profits to buy or sell additional amounts on a margin, as where one buys on a 10% margin 100 shares of stock quoted at 100, holds it till it rises to 105, and then uses the paper profit to buy 50 shares more, etc. The series of operations constitutes a pyramid .
Pyramid Pyr"a·mid transitive verb (Speculation) To use, or to deal in, in a pyramiding transaction. See Pyramid , intransitive verb
Pyramid Pyr"a·mid noun (Speculation) The series of operations involved in pyramiding. See Pyramid , intransitive verb
Pyramidal Py·ram`i·dal adjective [ Confer French
pyramidal .]
1. Of or pertaining to a pyramid; in the form of a a pyramid; pyramidical; as, pyramidal cleavage. The mystic obelisks stand up
Triangular, pyramidal .
Mrs. Browning. 2. (Crystallog.) Same as Tetragonal . Pyramidal numbers (Math.) ,
certain series of figurate numbers expressing the number of balls or points that may be arranged in the form of pyramids. Thus 1, 4, 10, 20, 35, etc., are triangular pyramidal numbers ; and 1, 5, 14, 30, 55, etc., are square pyramidal numbers .
Pyramidal Py·ram"i·dal noun (Anat.) One of the carpal bones. See Cuneiform , noun , 2 (b) .
Pyramidally Py·ram"i·dal·ly adverb Like a pyramid.
Pyramidic, Pyramidical Pyr`a·mid"ic, Pyr`a·mid"ic·al adjective Of or pertaining to a pyramid; having the form of a pyramid; pyramidal. " A
pyramidical rock."
Goldsmith. "Gold in
pyramidic plenty piled."
Shenstone. --
Pyr`a*mid"ic*al*ly ,
adverb Pyr`a*mild"ic*al*ness ,
noun
Pyramidion Pyr`a·mid"i·on noun ;
plural Pyramidia . [ New Latin , from Latin
pyramis . See
Pyramid .]
The small pyramid which crowns or completes an obelisk.
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