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Phlegmon

Purulent inflammation of the cellular or areolar tissue.

Phlegmonous

Having the nature or properties of phlegmon; as, phlegmonous pneumonia.

Phleum

A genus of grasses, including the timothy (Phleum pratense), which is highly valued for hay; cat's-tail grass.

Phloem

That portion of fibrovascular bundles which corresponds to the inner bark; the liber tissue; -- distinguished from xylem.

Phlogistic

Of or pertaining to phlogiston, or to belief in its existence.

Phlogisticate

To combine phlogiston with; -- usually in the form and sense of the p. p. or the adj.; as, highly phlogisticated substances.

Phlogiston

The former hypothetical principle of fire, or inflammability, regarded by Stahl as a chemical element; it is now known to be nonexistent.

Phlogopite

A kind of mica having generally a peculiar bronze-red or copperlike color and a pearly luster. It is a silicate of aluminia, with magnesia, potash, and some fluorine. It is characteristic of crystalline limestone or dolomite and serpentine. See Mica.

Phlogosis

Inflammation of external parts of the body; erysipelatous inflammation.

Phloramine

A basic amido derivative of phloroglucin, having an astringent taste.

Phloretic

Pertaining to, or derived from, or designating, an organic acid obtained by the decomposition of phloretin.

Phloretin

A bitter white crystalline substance obtained by the decomposition of phlorizin, and formerly used to some extent as a substitute for quinine.

Phlorizin

A bitter white crystalline glucoside extracted from the root bark of the apple, pear, cherry, plum, etc.

Phloroglucin

A sweet white crystalline substance, metameric with pyrogallol, and obtained by the decomposition of phloretin, and from certain gums, as catechu, kino, etc. It belongs to the class of phenols. [Called also phloroglucinol.]

Phlorol

A liquid metameric with xylenol, belonging to the class of phenols, and obtained by distilling certain salts of phloretic acid.

Phlorone

A yellow crystalline substance having a peculiar unpleasant odor, resembling the quinones, and obtained from beechwood tar and coal tar, as also by the oxidation of xylidine; -- called also xyloquinone.

phlox

A genus of American herbs, having showy red, white, or purple flowers.

Phlyctenular

Characterized by the presence of small pustules, or whitish elevations resembling pustules; as, phlyctenular ophthalmia.

phobia

Any irrational and persistent fear, whether of a situation, activity, or object; a phobia typically leads to a strong desire to avoid the object of the phobia.

phobic

A person suffering from a phobia.

Phoca

A genus of seals. It includes the common harbor seal and allied species. See Seal.

phocenic

Of or pertaining to dolphin oil or porpoise oil; -- said of an acid (called also delphinic acid) subsequently found to be identical with valeric acid.

Phocine

Of or pertaining to the seal tribe; phocal.

Phocodontia

A group of extinct carnivorous whales. Their teeth had compressed and serrated crowns. It includes Squalodon and allied genera.

Phoenician

Of or pertaining to Ph/nica. A native or inhabitant of Ph/nica.

Pholas

Any one of numerous species of marine bivalve mollusks of the genus Pholas, or family Pholadid/. They bore holes for themselves in clay, peat, and soft rocks.

Pholistoma

A genus of straggling herbs of the southwestern U.S.

Phonal

Of or relating to the voice; as, phonal structure.

Phonation

The act or process by which articulate sounds are uttered; the utterance of articulate sounds; articulate speech.

Phonautograph

An instrument by means of which a sound can be made to produce a visible trace or record of itself. It consists essentially of a resonant vessel, usually of paraboloidal form, closed at one end by a flexible membrane. A stylus attached to some point of the membrane records the movements of the latter, as it vibrates, upon a moving cylinder or plate.

Phone

An instrument that converts sound into signals that can be transmitted over distances and then converts received signals back into sounds; a telephone; as, I talked to him on the phone.

phone

To get or try to get into communication with, using a telephone; as, I phoned him this morning.

phone-in

A radio or telephone program, or part of a program, during which the audience participates by telephone.

Phoneidoscope

An instrument for studying the motions of sounding bodies by optical means. It consists of a tube across the end of which is stretched a film of soap solution thin enough to give colored bands, the form and position of which are affected by sonorous vibrations.

phoneme

One of a small set of speech sounds that are used by and distinguished by the speakers of a particular language. They are combined into morphemes, words, and sentences.

phonemic

Of or pertaining to a phoneme; as, phonemic analysis.

phonemics

The study of the sound system of a given language and the analysis and classification of its phonemes.

Phonetic

Of or pertaining to the voice, or its use.

Phonetics

The doctrine or science of sounds; especially those of the human voice; phonology.

Phonetism

The science which treats of vocal sounds.

Phonetist

One versed in phonetics; a phonologist.

Phonetization

The act, art, or process of representing sounds by phonetic signs.

phoney

Something or someone that is phoney.

Phonic

Of or pertaining to sound; of the nature of sound; acoustic.

Phono

A South American butterfly (Ithonia phono) having nearly transparent wings.

Phonogram

A letter, character, or mark used to represent a particular sound.

Phonograph

A character or symbol used to represent a sound, esp. one used in phonography.

Phonography

A description of the laws of the human voice, or sounds uttered by the organs of speech.

Phonolite

A compact, feldspathic, igneous rock containing nephelite, ha/ynite, etc. Thin slabs give a ringing sound when struck; -- called also clinkstone.

Phonology

The science or doctrine of the elementary sounds uttered by the human voice in speech, including the various distinctions, modifications, and combinations of tones; phonetics. Also, a treatise on sounds.

Phonometer

An instrument for measuring sounds, as to their intensity, or the frequency of the vibrations.

Phonomotor

An instrument in which motion is produced by the vibrations of a sounding body.

Phonoscope

An instrument for observing or exhibiting the motions or properties of sounding bodies; especially, an apparatus invented by K/nig for testing the quality of musical strings. An instrument for producing luminous figures by the vibrations of sounding bodies.

Phonotype

A type or character used in phonotypy.

Phonotypy

A method of phonetic printing of the English language, as devised by Mr. Pitman, in which nearly all the ordinary letters and many new forms are employed in order to indicate each elementary sound by a separate character.

phony

Something or someone that is phony.

Phorminx

A kind of lyre used by the Greeks.

Phormium

A genus of liliaceous plants, consisting of one species (Phormium tenax). See Flax-plant.

Phorone

A yellow crystalline substance, having a geraniumlike odor, regarded as a complex derivative of acetone, and obtained from certain camphor compounds.

Phoronis

A remarkable genus of marine worms having tentacles around the mouth. It is usually classed with the gephyreans. Its larva (Actinotrocha) undergoes a peculiar metamorphosis.

Phosgene

Producing, or produced by, the action of light; -- used specifically to designate a gas also called carbonyl chloride. See phosgene, n., and Carbonyl.

phosgene

A reactive chemical substance (COCl2), also called carbonyl choride, used in synthesis of numerous substances. In the First World War it was also used as a poisonous gas in combat.

Phosgenite

A rare mineral occurring in tetragonal crystals of a white, yellow, or grayish color and adamantine luster. It is a chlorocarbonate of lead.

Phospham

An inert amorphous white powder, PN2H, obtained by passing ammonia over heated phosphorus.

Phosphate

A salt of phosphoric acid or a compound containing the phosphate radical group -PO4; as, trisodium phosphate (Na3PO4); triethyl phosphate ((C2H5)3PO4).

Phosphatic

Pertaining to, or containing, phosphorus, phosphoric acid, or phosphates; as, phosphatic nodules.

Phosphaturia

The excessive discharge of phosphates in the urine.

Phosphene

A luminous impression produced through excitation of the retina by some cause other than the impingement upon it of rays of light, as by pressure upon the eyeball when the lids are closed. Cf. After-image.

phosphine

A colorless gas, PH3, analogous to ammonia, and having a disagreeable odor resembling that of garlic. Called also hydrogen phosphide, and formerly, phosphureted hydrogen. It is postulated as one possible cause of the rare lights seen in marshes -- see ignis fatuus.

Phosphine

Chrysaniline, often in the form of a salt.

Phosphinic

Pertaining to, or designating, certain acids analogous to the phosphonic acids, but containing two hydrocarbon radicals, and derived from the secondary phosphines by oxidation.

Phosphonic

Pertaining to, or designating, certain derivatives of phosphorous acid containing a hydrocarbon radical with the phosphorus directly bonded to a carbon, and analogous to the sulphonic acids; as, methanephosphonic acid, CH3.PO.(OH)2.

Phosphonium

The hypothetical radical PH4, analogous to ammonium, and regarded as the nucleus of certain derivatives of phosphine.

Phosphor-bronze

A variety of bronze possessing great hardness, elasticity, and toughness, obtained by melting copper with tin phosphide. It contains one or two per cent of phosphorus and from five to fifteen per cent of tin.

Phosphorate

To impregnate, or combine, with phosphorus or its compounds; as, phosphorated oil.

Phosphoresce

To shine as phosphorus; to be phosphorescent; to emit a phosphoric light. Generally, to emit light at temperatures too low to excite incandescent radiation.

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