<B>phase-locked, </B>adjective.<DL COMPACT><DD> operating in precise synchronization; locked in phase. <BR> <I>Ex. Bursts of action potentials, phase-locked with the oscillations, took place in the prodded finger as they do in normal tremor (Scientific American).</I> </DL>
<A NAME="phasemodulation">
<B>phase modulation,</B><DL COMPACT><DD> a means of electronic modulation in which the phase of the carrier wave is varied in order to transmit the amplitude and pitch of the signal. </DL>
<A NAME="phaseout">
<B>phase-out, </B>noun.<DL COMPACT><DD> the discontinuation of an operation, production, program, or action, by stages. <BR> <I>Ex. The British government would plan a gradual phase-out of the British strategic nuclear forces (Harper's).</I> </DL>
<A NAME="phaserule">
<B>phase rule,</B><DL COMPACT><DD> (Physical Chemistry.) F = C - P + 2, where F represents the freedom of a substance, C its components, and P its phases. </DL>
<A NAME="phasis">
<B>phasis, </B>noun, pl. <B>-ses.</B><DL COMPACT><DD> phase, especially: <DD><B> a. </B>any one aspect of a thing of varying appearances. <DD><B> b. </B>a state or stage of change or development. </DL>
<B>phatic, </B>adjective.<DL COMPACT><DD> of or having to do with communication of friendly feeling or sociableness by words or gestures instead of communication of ideas. <BR> <I>Ex. We normally use words to express purpose or to persuade (much less for that "phatic" purpose of making and maintaining human contact for its own sake) (Anthony Burgess).</I> </DL>
<A NAME="phb">
<B>Ph.B.,</B><DL COMPACT><DD> (U.S.) Bachelor of Philosophy (Latin, <I>Philosophiae Baccalaureus</I>). </DL>
<B>Ph.D.,</B><DL COMPACT><DD> Doctor of Philosophy (Latin, <I>Philosophiae Doctor</I>). </DL>
<A NAME="pheasant">
<B>pheasant, </B>noun, pl. <B>-ants</B> or (collectively) <B>-ant.</B><DL COMPACT><DD><B> 1. </B>a large game bird with brilliant feathers in the male, and long pointed tail feathers, that nests on the ground and flies only short distances. There are various kinds, related to the domestic fowl and the peacock. Pheasants are native to Asia but are now established in many parts of Europe and America. <DD><B> 2. </B>any one of various similar birds, such as the ruffed grouse. </DL>
<A NAME="pheasantry">
<B>pheasantry, </B>noun, pl. <B>-ries.</B><DL COMPACT><DD> a place where pheasants are bred and kept. </DL>
<A NAME="pheasantseye">
<B>pheasant's-eye, </B>noun.<DL COMPACT><DD> any one of certain plants, such as an herb of the crowfoot family grown for its scarlet or crimson flowers, or a variety of common garden pink. </DL>
<B>phelloderm, </B>noun.<DL COMPACT><DD> (Botany.) a layer of parenchymatous cells often containing chlorophyll, formed in the stems and roots of some plants from the inner cells of the phellogen. </DL>
<A NAME="phellodermal">
<B>phellodermal, </B>adjective.<DL COMPACT><DD> of or having to do with the phelloderm. </DL>
<A NAME="phellogen">
<B>phellogen, </B>noun.<DL COMPACT><DD> a layer of cellular tissue or secondary meristem forming cork cells toward the outside and phelloderm toward the inside of the stem and root of many plants; cork cambium. </DL>
<B>phellogenic, </B>adjective.<DL COMPACT><DD><B> 1. </B>like phellogen. <DD><B> 2. </B>having to do with phellogen. </DL>
<A NAME="phen">
<B>phen-,</B><DL COMPACT><DD> (combining form.) a benzene derivative, as in <I>phenol, phenyl.</I> Also, <B>pheno-</B> before consonants. </DL>
<A NAME="phenacainehydrochloride">
<B>phenacaine hydrochloride,</B> or <B>phenacaine, </B>noun.<DL COMPACT><DD> a white, soluble crystalline powder used as a local anesthetic, especially for the eye; Holocaine hydrochloride. </DL>
<A NAME="phenacetin">
<B>phenacetin</B> or <B>phenacetine, </B>noun.<DL COMPACT><DD> a white, soluble crystalline powder, used to relieve fever and pain; acetophenetidin. </DL>
<A NAME="phenacite">
<B>phenacite, </B>noun.<DL COMPACT><DD> a mineral, a colorless, yellow, or brown silicate of beryllium, sometimes used as a gem, occurring in quartzlike transparent or translucent crystals. </DL>
<A NAME="phenacomys">
<B>phenacomys, </B>noun.<DL COMPACT><DD> any one of a group of small voles or mice with, usually, long, silky fur, found in Canada, Alaska, and mountains of the western United States. </DL>
<A NAME="phenakistoscope">
<B>phenakistoscope, </B>noun.<DL COMPACT><DD> a scientific toy consisting of a disk with figures upon it arranged radially, representing a moving object in successive positions. When the disk is turned around rapidly and the viewer sees the figures through a fixed slit (or their reflections in a mirror through radial slits in the disk itself) in quick succession the eye receives the impression of actual motion. </DL>
<A NAME="phenakite">
<B>phenakite, </B>noun. =phenacite.</DL>
<A NAME="phenanthrene">
<B>phenanthrene, </B>noun.<DL COMPACT><DD> a colorless hydrocarbon crystallizing in shining scales, found in association with anthracene (with which it is isometric) and used in making dyes, drugs, and explosives. </DL>
<A NAME="phenazin">
<B>phenazin, </B>noun. =phenazine.</DL>
<A NAME="phenazine">
<B>phenazine, </B>noun.<DL COMPACT><DD> a basic chemical compound crystallizing in long yellowish needles. It is a source of many important dyes. </DL>
<A NAME="phenazocine">
<B>phenazocine, </B>noun.<DL COMPACT><DD> a synthetic pain reliever more powerful than morphine and thought to be less addictive. </DL>
<B>phencyclidine, </B>noun.<DL COMPACT><DD> a depressant drug with powerful hallucinatory side effects in humans, now used legally only as a tranquilizer for monkeys and elephants. (Abbr:) PCP </DL>
<A NAME="phenelzine">
<B>phenelzine, </B>noun.<DL COMPACT><DD> a synthetic drug that helps to relieve mental depression. It is a monoamine-oxidase inhibitor. </DL>
<A NAME="phenergan">
<B>Phenergan, </B>noun.<DL COMPACT><DD> (Trademark.) a tranquilizing drug used in treating allergies and motion sickness and as a light anesthetic; promethazine. </DL>
<A NAME="phenetic">
<B>phenetic, </B>adjective.<DL COMPACT><DD> of or having to do with a system of classification of organisms based on overall or relative degrees of observable similarity among the organisms to be classified. adv. <B>phenetically.</B> </DL>
<A NAME="pheneticist">
<B>pheneticist, </B>noun.<DL COMPACT><DD> a person who uses or favors phenetic classification. </DL>
<A NAME="phenetics">
<B>phenetics, </B>noun.<DL COMPACT><DD> the phenetic system of classification. </DL>
<A NAME="phenetidin">
<B>phenetidin, </B>noun. =phenetidine.</DL>
<A NAME="phenetidine">
<B>phenetidine, </B>noun.<DL COMPACT><DD> a colorless liquid base found in three isometric forms. It is derived from phenetole, and is used in making phenacetin and dyes. </DL>
<A NAME="phenetol">
<B>phenetol, </B>noun. =phenetole.</DL>
<A NAME="phenetole">
<B>phenetole, </B>noun.<DL COMPACT><DD> a colorless volatile, aromatic liquid. </DL>
<A NAME="phenformin">
<B>phenformin, </B>noun.<DL COMPACT><DD> a drug used against diabetes; DBI. </DL>
<B>phenmetrazine, </B>noun.<DL COMPACT><DD> a sympathomimetic drug used as an appetite depressant. </DL>
<A NAME="pheno">
<B>pheno-,</B><DL COMPACT><DD> (combining form.) the form of <B>phen-</B> before consonants, as in <I>phenobarbital.</I> </DL>
<A NAME="phenobarbital">
<B>phenobarbital, </B>noun.<DL COMPACT><DD> a white, crystalline powder, used chiefly in the form of phenobarbital sodium as a hypnotic or sedative. Phenobarbital is a barbiturate. </DL>
<A NAME="phenobarbitalsodium">
<B>phenobarbital sodium,</B><DL COMPACT><DD> a bitter, white soluble powder, used as a hypnotic or sedative. </DL>
<B>phenol, </B>noun.<DL COMPACT><DD><B> 1. </B><B>=carbolic acid.</B> <DD><B> 2. </B>any one of a series of aromatic hydroxyl derivatives of benzene, of which carbolic acid is the first member. </DL>
<A NAME="phenolate">
<B>phenolate, </B>noun.<DL COMPACT><DD> a salt of phenol; phenoxide. </DL>
<A NAME="phenolic">
<B>phenolic, </B>adjective, noun.<DL COMPACT><DD><I>adj. </I> <B>1. </B>of the nature of phenol. <DD><B> 2. </B>belonging to phenol. <DD><I>noun </I> any one of a group of thermosetting synthetic resins, obtained chiefly by the reaction of a phenol with an aldehyde, used for molding and in varnishes. </DL>
<A NAME="phenolicresin">
<B>phenolic resin,</B> =phenolic.</DL>
<A NAME="phenolize">
<B>phenolize, </B>transitive verb, <B>-lized,</B> <B>-lizing.</B><DL COMPACT><DD> to treat with phenol. <BR> <I>Ex. Phenolized vaccine gives better protection than the alcoholized type (Science News Letter).</I> </DL>
<A NAME="phenological">
<B>phenological, </B>adjective.<DL COMPACT><DD> of or having to do with phenology or the objects of its study. adv. <B>phenologically.</B> </DL>
<A NAME="phenologist">
<B>phenologist, </B>noun.<DL COMPACT><DD> a person who studies phenology. </DL>
<A NAME="phenology">
<B>phenology, </B>noun.<DL COMPACT><DD> the study of periodic occurrences in nature, such as the migration of birds and the ripening of fruit, and their relation to climate. </DL>
<A NAME="phenolphthalein">
<B>phenolphthalein, </B>noun.<DL COMPACT><DD> a white or pale-yellow powder used in testing acidity, making dyes, and as a laxative. Its solution is red when basic, colorless when acid. </DL>
