<B>pulmonary artery,</B><DL COMPACT><DD> the artery which carries venous blood directly from the right ventricle of the heart to the lungs. </DL>
<A NAME="pulmonarycirculation">
<B>pulmonary circulation,</B><DL COMPACT><DD> the part of the human circulatory system that carries the blood from the heart to the lungs and back again. </DL>
<A NAME="pulmonarytuberculosis">
<B>pulmonary tuberculosis,</B><DL COMPACT><DD> tuberculosis of the lungs. </DL>
<A NAME="pulmonaryvalve">
<B>pulmonary valve,</B><DL COMPACT><DD> a set of three crescent-shaped flaps at the opening of the pulmonary artery; the semilunar valves. <BR> <I>Ex. When the ventricle contracts ... the pulmonary valve is opened and blood flows through (Scientific American).</I> </DL>
<A NAME="pulmonaryvein">
<B>pulmonary vein,</B><DL COMPACT><DD> one of the four veins which carry oxygenated blood directly from the lungs to the left auricle of the heart. </DL>
<A NAME="pulmonate">
<B>pulmonate, </B>adjective, noun.<DL COMPACT><DD><I>adj. </I> <B>1. </B>having lungs or lunglike organs. <DD><B> 2. </B>of or belonging to a group of gastropod mollusks that have lunglike sacs and include most land snails and slugs, and some aquatic snails. <DD><I>noun </I> a pulmonate gastropod. </DL>
<B>Pulmotor, </B>noun.<DL COMPACT><DD> (Trademark.) a mechanical apparatus for producing artificial respiration which pumps air or oxygen in and out of the lungs, used in cases of drowning, asphyxiation, and heart attack; respirator. </DL>
<A NAME="pulp">
<B>pulp, </B>noun, verb.<DL COMPACT><DD><I>noun </I> <B>1. </B>the soft, fleshy part of any fruit or vegetable. <BR> <I>Ex. the pulp of an orange.</I> <DD><B> 2. </B>the soft residue left when most of the liquid is pressed out of vegetables, fruit, etc. <DD><B> 3. </B>the soft pith in the interior of the stem of a plant. <DD><B> 4. </B>the soft inner part of a tooth, containing blood vessels and nerves. <BR> <I>Ex. Even teeth in which the pulps had been removed or destroyed were found to have some traces of radiophosphorus (Shirley Hughes).</I> <DD><B> 5. </B>any soft, wet mass. Paper is made from wood or rags ground to pulp and mixed with water. <DD><B> 6. </B>(Slang.) a magazine printed on cheap paper, and usually containing matter of a cheap, sensational nature. <BR> <I>Ex. Commercial writers who once filled the pulps and slicks with short stories have arrived here (Maclean's).</I> <DD><B> 7. </B>(Mining.) <DD><B> a. </B>pulverized ore mixed with water. <DD><B> b. </B>dry pulverized ore. <DD><I>v.t. </I> <B>1. </B>to reduce to pulp. <BR> <I>Ex. Extracts from the various organs must then be removed and pulped and ... injected into the patient (Punch).</I> <DD><B> 2. </B>to remove the pulp from. <DD><I>v.i. </I> to become pulpy. </DL>
<A NAME="pulpal">
<B>pulpal, </B>adjective.<DL COMPACT><DD> of or having to do with pulp. </DL>
<A NAME="pulpboard">
<B>pulpboard, </B>noun.<DL COMPACT><DD> a kind of millboard made directly from paper pulp instead of sheets of paper. </DL>
<A NAME="pulper">
<B>pulper, </B>noun.<DL COMPACT><DD> a machine for reducing fruit, wood, or other such substance, to pulp. </DL>
<A NAME="pulpification">
<B>pulpification, </B>noun.<DL COMPACT><DD> the act or process of converting into pulp. </DL>
<A NAME="pulpifier">
<B>pulpifier, </B>noun. =pulper.</DL>
<A NAME="pulpify">
<B>pulpify, </B>transitive verb, <B>-fied,</B> <B>-fying.</B><DL COMPACT><DD> to reduce to pulp. </DL>
<A NAME="pulpiness">
<B>pulpiness, </B>noun.<DL COMPACT><DD> the quality or state of being pulpy; softness; flabbiness. </DL>
<A NAME="pulpit">
<B>pulpit, </B>noun.<DL COMPACT><DD><B> 1. </B>a platform or raised structure in a church from which the minister preaches. <BR> <I>Ex. This eloquent and ornate carving on a church pulpit was done by Indian hands (Newsweek).</I> <DD><B> 2a. </B>preachers or preachings. <BR> <I>Ex. the influence of the pulpit. The pulpit is against horse racing on Sunday.</I> <DD><B> b. </B>the Christian ministry. <DD><B> 3. </B>(Archaic.) any stage or rostrum used for public speeches or debates. <DD><B> 4. </B>a safety rail, usually of iron, lashed to the end of the bowsprit of a whaling vessel to insure the safety of the harpooner. </DL>
<A NAME="pulpiteer">
<B>pulpiteer, </B>noun.<DL COMPACT><DD> a preacher by profession (used in an unfriendly way). <BR> <I>Ex. These words came from no Sunday pulpiteer, but from the assistant to the president (Time).</I> </DL>
<B>pulp mill,</B><DL COMPACT><DD> a mill to convert wood into pulp for making paper and other products. </DL>
<A NAME="pulpous">
<B>pulpous, </B>adjective. =pulpy.</DL>
<A NAME="pulpwood">
<B>pulpwood, </B>noun.<DL COMPACT><DD><B> 1. </B>wood reduced to pulp for making paper. <DD><B> 2. </B>any soft wood, such as spruce, suitable for making paper. </DL>
<A NAME="pulpy">
<B>pulpy, </B>adjective, <B>pulpier,</B> <B>pulpiest.</B><DL COMPACT><DD> of pulp; like pulp; fleshy; soft. </DL>
<A NAME="pulque">
<B>pulque, </B>noun.<DL COMPACT><DD> an alcoholic beverage made from the fermented juice of certain magueys. Pulque is much used in Mexico and Central America. </DL>
<B>pulsar, </B>noun.<DL COMPACT><DD> an astronomical source of powerful radio waves emitted in short, intense bursts or pulses at very precise intervals. <BR> <I>Ex. Pulsars have been found in all parts of the sky, but lie primarily in the Milky Way near the symmetry plane of the galaxy (J. P. Ostriker).</I> </DL>
<A NAME="pulsate">
<B>pulsate, </B>intransitive verb, <B>-sated,</B> <B>-sating.</B><DL COMPACT><DD><B> 1. </B>to beat; throb; expand and contract rhythmically, as the heart or an artery does. <BR> <I>Ex. The patient's heart is pulsating rapidly. (Figurative.) What strains and strophes of unwritten verse pulsate through my soul (Oliver Wendell Holmes).</I> <DD><B> 2. </B>to vibrate; quiver. </DL>
<B>pulsatilla, </B>noun.<DL COMPACT><DD><B> 1. </B>any one of various perennial herbs of the crowfoot family with white or purplish flowers, certain kinds of which are used medicinally; pasqueflower. <DD><B> 2. </B>an extract or preparation obtained from such a plant. </DL>
<A NAME="pulsation">
<B>pulsation, </B>noun.<DL COMPACT><DD><B> 1. </B>the act of beating; throbbing; expanding and contracting. <BR> <I>Ex. This would suggest some slow pulsation taking place in the sun which gradually alters the strength of these solar streamers (E. F. George).</I> <DD><B> 2. </B>a beat; throb. <DD><B> 3. </B>the act of vibrating; quiver. </DL>
<B>pulsator, </B>noun.<DL COMPACT><DD><B> 1. </B>a machine that pulsates, especially a kind of pump. <DD><B> 2. </B>a device for separating diamonds from dirt. </DL>
<B>pulse</B> (1), noun, verb, <B>pulsed,</B> <B>pulsing.</B><DL COMPACT><DD><I>noun </I> <B>1. </B>the beating or a beat of the arteries caused by the changing flow of blood with each contraction of the heart. By feeling the pulse in the artery of the wrist, a person can count the number of times his heart beats each minute. <BR> <I>Ex. A wave of distention, the pulse, travels along the arteries (Harbaugh and Goodrich).</I> <DD><B> 2. </B>any regular, measured beat. <BR> <I>Ex. the pulse in music, the pulse of an engine.</I> <DD><B> 3. </B>(Figurative.) feeling; sentiment. <BR> <I>Ex. the pulse of the nation.</I> <DD><B> 4. </B>(Electronics.) an electromagnetic wave, or a modulation of an electromagnetic wave, which lasts a short time. <BR> <I>Ex. In radar, for instance, the signals used are pulses, which rise and fall in amplitude over a short time (John Pierce).</I> <DD><I>v.i. </I> <B>1. </B>to beat; throb; vibrate. <BR> <I>Ex. My heart pulsed with excitement. (Figurative.) Theodore Dreiser could make a page pulse with life (Newsweek).</I> <DD><B> 2. </B>(Electronics.) to emit or produce pulses. <BR><I>expr. <B>pulses,</B> </I>each successive beat or throb of the arteries or heart. <BR> <I>Ex. This means that pulses, to be counted, must be analyzed by both detectors simultaneously (Science).</I> adj. <B>pulseless.</B> adj. <B>pulselike.</B> </DL>
<A NAME="pulse">
<B>pulse</B> (2), noun.<DL COMPACT><DD><B> 1. </B>the seeds of a group of plants, such as peas, beans, and lentils, used as food. <DD><B> 2. </B>a plant that yields such seeds. </DL>
<A NAME="pulsebeat">
<B>pulsebeat, </B>noun.<DL COMPACT><DD><B> 1. </B>a beat or pulsation of an artery. <BR> <I>Ex. The doctors noted irregular breathing movements and a possible heartbeat, although they could not detect a pulsebeat (The Warren Report).</I> <DD><B> 2. </B>(Figurative.) a sign or suggestion of feeling or sentiment. <BR> <I>Ex. Instead of capturing the hypnotic quality of Marquand's even-tempered prose, the writer may find he has only reproduced Marquand's low emotional pulsebeat (Time).</I> </DL>
<A NAME="pulsecodemodulation">
<B>pulse-code modulation,</B><DL COMPACT><DD> a system of radio transmission in which successive electromagnetic waves of short duration are sampled periodically, quantized, and transmitted by code. <BR> <I>Ex. The result was the rapid development of pulse-code modulation ... as a rival to amplitude modulation (AM) and frequency modulation (FM) (Scientific American).</I> <DL COMPACT><DD> (Abbr:) PCM (no periods). </DL>
</DL>
<A NAME="pulsed">
<B>pulsed, </B>adjective.<DL COMPACT><DD> that come in pulses; having pulsations. <BR> <I>Ex. The natural mode of communication with or between machines is by means of pulsed electrical signals (John R. Pierce).</I> </DL>
<A NAME="pulsejet">
<B>pulsejet, </B>noun, or <B>pulsejet engine,</B><DL COMPACT><DD> a type of jet engine into which the air necessary for the burning of the fuel is admitted by valves in spurts; resonant jet; aeroresonator. <BR> <I>Ex. This helicopter was powered with pulsejets, which is what the Nazi V-1 buzz bombs were (Harper's).</I> </DL>
