In certain fungi, a flask-shaped cavity from the surface of the inner walls of which spores are produced.

A massive subcolumnar variety of topaz.

Any fossil fish belonging to the Pycnodontini. They have numerous round, flat teeth, adapted for crushing.

An extinct order of ganoid fishes. They had a compressed body, covered with dermal ribs (pleurolepida) and with enameled rhomboidal scales.

One of the Pycnogonida.

A class of marine arthropods in which the body is small and thin, and the eight legs usually very long; -- called also Pantopoda.

A specific gravity bottle; a standard flask for measuring and comparing the densities of liquids.

See under Intercolumniation. A pycnostyle colonnade.

See 2d Pie (b).

See Piebald.

Inflammation of the pelvis of the kidney.

See Pyaemia.

A form of blood poisoning produced by the absorption of pyogenic microorganisms into the blood, usually from a wound or local inflammation. It is characterized by multiple abscesses throughout the body, and is attended with irregularly recurring chills, fever, profuse sweating, and exhaustion.

A magpie; a piet.

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.

The caudal plate of trilobites, crustacean, and certain insects. See Illust. of Limulus and Trilobite.

Of or pertaining to a pygmy; resembling a pygmy or dwarf; dwarfish; very small.

One of a fabulous race of dwarfs who waged war with the cranes, and were destroyed.

A division of opisthobranchiate mollusks having the branchi/ in a wreath or group around the anal opening, as in the genus Doris.

A division of swimming birds which includes the grebes, divers, auks, etc., in which the legs are placed far back.

Of or pertaining to the Pygopodes.

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 vertebr/, and supports the uropigium.

An albuminoid constituent of pus, related to mucin, possibly a mixture of substances rather than a single body.

In India and Persia, thin loose trowsers or drawers; in Europe and America, drawers worn at night, or a kind of nightdress with legs. Usually used in the plural. See pajamas.

An ancient English fishing boat.

The passage between the iter and optoc/le in the brain.

a deputy of a State at the Amphictyonic council.

The first and undivided part of the aortic trunk in the amphibian heart.

A low tower, having a truncated pyramidal form, and flanking an ancient Egyptian gateway.

Of, pertaining to, or in the region of, the pylorus; as, the pyloric end of the stomach.

The opening from the stomach into the intestine. A posterior division of the stomach in some invertebrates.

See Pine.

A pennant.

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).

Producing or generating pus.

Of or pertaining to pus; of the nature of, or like, pus.

Accumulation of air, or other gas, and of pus, in the pleural cavity.

The magpie. See Piet.

A greenish yellow crystalline coloring matter found with pyocyanin in pus.

The evergreen thorn (Crat/gus Pyracantha), a shrub native of Europe.

Of or pertaining to a pyre.

Any moth of the family Pyralid/. 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.

To use, or to deal in, in a pyramiding transaction. See Pyramid, v. i.

One of the carpal bones. See Cuneiform, n., 2 (b).

Like a pyramid.

Of or pertaining to a pyramid; having the form of a pyramid; pyramidal.

The small pyramid which crowns or completes an obelisk.

A solid resembling a pyramid; -- called also pyramoid.

A pyramid.

See Pyramidoid.

Ruby silver; dark red silver ore. It is a sulphide of antimony and silver, occurring in rhombohedral crystals or massive, and is of a dark red or black color with a metallic adamantine luster.

A funeral pile; a combustible heap on which the dead are burned; hence, any pile to be burnt.

A nutlet resembling a seed, or the kernel of a drupe.

Same as Pyrena.

Of or pertaining to the Pyrenees, a range of mountains separating France and Spain. The Pyrenees.

A transparent body found in the chromatophores of certain Infusoria.

A substance resembling, and isomeric with, ordinary camphor, and extracted from the essential oil of feverfew; -- called also Pyrethrum camphor.

An alkaloid extracted from the root of the pellitory of Spain (Anacyclus pyrethrum).

Of or pertaining to fever; febrile.

A discourse or treatise on fevers; the doctrine of fevers.

Of or pertaining to fever; feverish.

A variety of pyroxene; -- called also fassaite.

An instrument for measuring the direct heating effect of the sun's rays.

Related to, or formed from, pyridin or its homologues; as, the pyridic bases.

A nitrogenous base, C5H5N, obtained from the distillation of bone oil or coal tar, and by the decomposition of certain alkaloids, as a colorless liquid with a peculiar pungent odor. It is the nucleus of a large number of organic substances, among which several vegetable alkaloids, as nicotine and certain of the ptoma/nes, may be mentioned. See Lutidine.

A hypothetical radical, C5H4N, regarded as the essential residue of pyridine, and analogous to phenyl.

Having the form of a pear; pear-shaped.

Of or pertaining to pyrites. See Pyritic.

A common mineral of a pale brass-yellow color and brilliant metallic luster, crystallizing in the isometric system; iron pyrites; iron disulphide.

A name given to a number of metallic minerals, sulphides of iron, copper, cobalt, nickel, and tin, of a white or yellowish color.

Of or pertaining to pyrites; consisting of, or resembling, pyrites.

Containing or producing pyrites.

To convert into pyrites.

Like pyrites in hemihedral form.

The pentagonal dodecahedron, a common form of pyrite.

Pyritohedron.

The science of blowpipe analysis.

Pyritic.

Abbreviation of pyrogallic acid.

Pertaining to, and designating, a substance (acetone) obtained by the distillation of the acetates. It is now called also pyroacetic ether, and formerly was called pyroacetic spirit.

An acid obtained by sybjecting another acid to the action of heat. Cf. Pyro-.

A salt of pyroantimonic acid.

Pertaining to, or designating, an acid of antimony analogous to pyrophosphoric acid.

A salt of pyroarsenic acid.

Pertaining to or designating, an acid of arsenic analogous to pyrophosphoric acid.

A salt of pyroboric acid.

Pertaining to derived from, or designating, an acid, H2B4O7 (called also tetraboric acid), which is the acid ingredient of ordinary borax, and is obtained by heating boric acid.

A white crystalline substance, C6H4(OH)2, of the phenol series, found in various plants; -- so called because first obtained by distillation of gum catechu. Called also catechol, oxyphenol. etc.

A niobate of calcium, cerium, and other bases, occurring usually in octahedrons of a yellowish or brownish color and resinous luster; -- so called from its becoming grass-green on being subjected to heat under the blowpipe.

Pertaining to, or designating, any one of three acids obtained by the distillation of citric acid, and called respectively citraconic, itaconic, and mesaconic acid.

A yellow crystalline substance allied to pyrrol, obtained by the distillation of gelatin.

A substance which becomes electrically polar when heated, exhibiting opposite charges of statical electricity at two separate parts, especially the two extremities.

Electricity developed by means of heat; the science which treats of electricity thus developed.

A salt of pyrogallic acid; an ether of pyrogallol.

Pertaining to, derived from, or designating, an acid called pyrogallol. See Pyrogallol.

A phenol metameric with phloroglucin, obtained by the distillation of gallic acid as a poisonous white crystalline substance having acid properties, and hence called also pyrogallic acid. It is a strong reducer, and is used as a developer in photography and in the production of certain dyes.

Electricity.

Producing heat; -- said of substances, as septic poisons, which elevate the temperature of the body and cause fever.

Produced by fire; igneous.

Of or pertaining to characters developed by the use of heat; pertaining to the characters of minerals when examined before the blowpipe; as, the pyrognostic characters of galena.

The characters of a mineral observed by the use of the blowpipe, as the degree of fusibility, flame coloration, etc.

A production of pyrography.

A process of printing, ornamenting, or carving, by burning with heated instruments. One variant is wood burning.

Pyrography; also, a design or picture made by pyrography.

A fire worshiper.

The worship of fire.

Pertaining to, or designating, the acid liquid obtained in the distillation of wood, consisting essentially of impure acetic acid.

A crude acetate produced by treating pyroligneous acid with a metal or basic compound; as, pyrolignite of iron (iron liquor).

Same as Pyroligneous.

Same as Pyrouric, or Cyanuric.

One who is versed in, or makes a study of, pyrology.

That branch of physical science which treats of the properties, phenomena, or effects of heat; also, a treatise on heat.

Manganese dioxide, a mineral of an iron-black or dark steel-gray color and metallic luster, usually soft. Pyrolusite parts with its oxygen at a red heat, and is extensively used in discharging the brown and green tints of glass (whence its name).

Acting by the agency of heat and magnetism; as, a pyromagnetic machine for producing electric currents.

A salt of pyromalic acid.

Pertaining to, or designating, an acid now called maleic acid.

Divination by means of fire.

An insane disposition to incendiarism.

One who pretends to divine by fire.

An instrument used for measuring the expansion of solid bodies by heat.