<B>Pentelic, </B>adjective.<DL COMPACT><DD> of or from Mount Pentelicus, north of Athens, Greece, especially with reference to the famous marble quarried there. </DL>
<A NAME="pentelicmarble">
<B>Pentelic marble,</B><DL COMPACT><DD> a fine-grained white marble much used in ancient Greek sculpture and architecture. </DL>
<A NAME="penthouse">
<B>penthouse, </B>noun.<DL COMPACT><DD><B> 1. </B>an apartment or house built on the top of a building. <DD><B> 2. </B>a small roofed structure over an elevator shaft, in which the motor, pulley wheels, and other mechanisms, are housed. <DD><B> 3. </B>a sloping roof projecting from a building, as to shelter a door. <DD><B> 4. </B>a shed with a sloping roof, attached to a building. <DD><B> 5. </B>any one of various structures like a sloping roof, such as a shed for the protection of besiegers or a covering formed of soldiers' shields held over their heads. </DL>
<A NAME="pentice">
<B>pentice</B> or <B>pentise, </B>noun.<DL COMPACT><DD> (Obsolete.) penthouse. </DL>
<A NAME="pentimento">
<B>pentimento, </B>noun, pl. <B>-ti.</B><DL COMPACT><DD><B> 1. </B>the emergence of an earlier form in a painting that has been altered and painted over. <DD><B> 2. </B>such a form before or after its emergence. <BR> <I>Ex. Radiographs confirm that the bars cover pentimenti (New York Times).</I> </DL>
<A NAME="pentjak">
<B>pentjak, </B>noun.<DL COMPACT><DD> a formal system of self-defense practiced in Indonesia. </DL>
<A NAME="pentlandite">
<B>pentlandite, </B>noun.<DL COMPACT><DD> a mineral found in Ontario, Canada, the chief ore of nickel. It is a combination of nickel, sulfur, and iron. </DL>
<A NAME="pentobarbital">
<B>pentobarbital, </B>noun.<DL COMPACT><DD> a white granular barbiturate used in the preparation of certain medicines, such as pentobarbital sodium. </DL>
<A NAME="pentobarbitalsodium">
<B>pentobarbital sodium,</B><DL COMPACT><DD> a white, slightly bitter, soluble crystalline powder used as a sedative and hypnotic; Nembutal. </DL>
<A NAME="pentode">
<B>pentode, </B>noun.<DL COMPACT><DD><B> 1. </B>the vacuum tube formerly most commonly used for amplification in radio and television sets, so called because it has five electrodes. <BR> <I>Ex. Three-grid tubes, or pentodes, are capable of greater amplification than triodes (Roy F. Allison).</I> <DD><B> 2. </B>a high-power transistor used for the same purpose, having four wires. <BR> <I>Ex. The pentode transistor, now being perfected, has four cat whiskers and can replace three triode transistors for some applications (Newsweek).</I> </DL>
<A NAME="pentoliniumtartrate">
<B>pentolinium tartrate,</B><DL COMPACT><DD> a crystalline drug used in the treatment of high blood pressure. </DL>
<A NAME="pentolite">
<B>pentolite, </B>noun.<DL COMPACT><DD> a high explosive composed of pentaerythritol tetranitrate and TNT. </DL>
<A NAME="pentomic">
<B>pentomic, </B>adjective.<DL COMPACT><DD> of, having to do with, or designating an army division organized into five highly mobile, self-supporting battle groups trained in the use of atomic weapons. <BR> <I>Ex. a pentomic infantry or airborne division, a pentomic army.</I> </DL>
<A NAME="pentomino">
<B>pentomino, </B>noun, pl. <B>-noes</B> or <B>-nos.</B><DL COMPACT><DD> a polyomino made to cover five squares on a game board. </DL>
<A NAME="pentosan">
<B>pentosan, </B>noun.<DL COMPACT><DD> any one of a group of complex carbohydrates (polysaccharides) that yield pentoses when hydrolyzed. Pentosans occur in most plants and in humus. <BR> <I>Ex. Xylose, an example of such a sugar, is found in plants only as a constituent of such complex carbohydrates as pentosans, gums, and hemicelluloses (Harbaugh and Goodrich).</I> </DL>
<A NAME="pentosane">
<B>pentosane, </B>noun. <B>=pentosan.</B></DL>
<A NAME="pentose">
<B>pentose, </B>noun.<DL COMPACT><DD> any one of a class of simple sugars (monosaccharides) that contain five atoms of carbon in each molecule, are constituents of ribonucleic acid, and are not fermented by yeast. Pentoses are produced in animal tissues, and are obtained from pentosans by hydrolysis. Deoxyribose and ribose are pentoses. <BR> <I>Ex. The nucleus of all cells contains a considerable amount of nucleic acid, a complex molecule containing a pentose sugar, phosphoric acid and a series of organic bases (John E. Harris).</I> </DL>
<B>pentoxide, </B>noun.<DL COMPACT><DD> a compound containing five atoms of oxygen combined with another element or radical. </DL>
<A NAME="pentroof">
<B>pent roof,</B><DL COMPACT><DD> a roof sloping in one direction only; shed roof. </DL>
<A NAME="pentstemon">
<B>pentstemon, </B>noun. <B>=penstemon.</B></DL>
<A NAME="pentup">
<B>pent-up, </B>adjective.<DL COMPACT><DD> shut up; closely confined. <BR> <I>Ex. Her pent-up feelings could no longer be restrained, and she burst into tears.</I> </DL>
<A NAME="penturbia">
<B>penturbia, </B>noun.<DL COMPACT><DD> (U.S.) small cities or towns that attract new residents because of their simple way of life, cheap land and housing, and often job or business opportunities. </DL>
<A NAME="pentyl">
<B>pentyl, </B>noun.<DL COMPACT><DD> a univalent radical derived from pentane; amyl. </DL>
<A NAME="pentylenetetrazol">
<B>pentylenetetrazol, </B>noun.<DL COMPACT><DD> a bitter, white, crystalline substance used as a stimulant of the central nervous system, especially in narcotic depression, barbiturate poisoning, and the treatment of senile patients; Metrazol. </DL>
<A NAME="penuche">
<B>penuche, </B>noun. <B>=panocha.</B></DL>
<A NAME="penuchi">
<B>penuchi, </B>noun. <B>=panocha.</B></DL>
<A NAME="penuchle">
<B>penuchle</B> or <B>penuckle, </B>noun. <B>=pinochle.</B></DL>
<A NAME="penult">
<B>penult, </B>noun, adjective.<DL COMPACT><DD><I>noun </I> the next to the last syllable in a word. <DD><I>adj. </I> <B>=penultimate.</B> </DL>
<A NAME="penultima">
<B>penultima, </B>noun. <B>=penult.</B></DL>
<A NAME="penultimate">
<B>penultimate, </B>adjective, noun.<DL COMPACT><DD><I>adj. </I> <B>1. </B>next to the last. <BR> <I>Ex. the penultimate number in a series, the penultimate day of the month. This is the penultimate link in the chain of evidence ... that there has been a conscious, deliberate effort to obstruct justice (John B. Anderson).</I> <DD><B> 2. </B>of or having to do with the penult. <DD><I>noun </I> <B>=penult.</B> adv. <B>penultimately.</B> </DL>
<A NAME="penultimatum">
<B>penultimatum, </B>noun.<DL COMPACT><DD> a declaration, demand, or the like, that immediately precedes an ultimatum, or is all but an ultimatum. </DL>
<A NAME="penumbra">
<B>penumbra, </B>noun, pl. <B>-brae,</B> <B>-bras.</B><DL COMPACT><DD><B> 1. </B>the partial shadow outside of the complete shadow formed by the sun or moon during an eclipse. <BR> <I>Ex. An observer within the umbra cannot see any part of the source; one within the penumbra can see a portion of the source, while from points outside the penumbra the entire source can be seen (Sears and Zamansky).</I> <DD><B> 2. </B>the grayish outer part of a sunspot. <BR> <I>Ex. A complete and fully formed spot shows a dark central portion, known as the umbra, surrounded by a not-so-dark area called the penumbra (Wasley S. Krogdahl).</I> <DD><B> 3. </B>(Figurative.) a partial shade or shadow. <BR> <I>Ex. One of the handicaps of poetry is that penumbra of holiness, the legacy of the nineteenth century, which still surrounds it (Atlantic).</I> </DL>
<A NAME="penumbral">
<B>penumbral, </B>adjective.<DL COMPACT><DD> having to do with or like a penumbra. <BR> <I>Ex. This penumbral region of faint partial shadow can scarcely be detected near the beginning of eclipse (Bernhard, Bennett, and Rice).</I> </DL>
<A NAME="penurious">
<B>penurious, </B>adjective.<DL COMPACT><DD><B> 1. </B>mean about spending or giving money; stingy. <BR> <I>Ex. a penurious, accumulating curmudgeon (Washington Irving). He lived in the most penurious manner and denied himself every luxury (William Godwin).</I> (SYN) niggardly. <DD><B> 2. </B>in a condition of penury; indigent; poverty-stricken. <DD><B> 3. </B>(Obsolete.) <DD><B> a. </B>scanty. <DD><B> b. </B>not rich or fertile; barren. adv. <B>penuriously.</B> noun <B>penuriousness.</B> </DL>
<A NAME="penury">
<B>penury, </B>noun.<DL COMPACT><DD> very great poverty; extreme want; destitution; indigence. <BR> <I>Ex. My scanty purse was exhausted, and ... I experienced the sordid distress of penury (Washington Irving).</I> </DL>
<A NAME="penutian">
<B>Penutian, </B>noun, adjective.<DL COMPACT><DD><I>noun </I> a grouping of North American Indian languages of the western United States. <DD><I>adj. </I> of or belonging to this grouping. <BR> <I>Ex. Maidu is a Penutian language.</I> </DL>
<A NAME="peon">
<B>peon, </B>noun.<DL COMPACT><DD><B> 1a. </B>a person doing work that requires little skill; unskilled worker. <DD><B> b. </B>an impoverished Indian laborer in Latin America. <DD><B> 2. </B>(formerly in the southwestern United States and Mexico) a worker held for service to work off a debt. <DD><B> 3. </B>formerly, in India: <DD><B> a. </B>a native foot soldier. <DD><B> b. </B>a native constable. <DD><B> c. </B>a native attendant or orderly. </DL>
<A NAME="peonage">
<B>peonage, </B>noun.<DL COMPACT><DD><B> 1. </B>the condition or service of a peon. <DD><B> 2. </B>the practice of holding persons to work off debts. <DD><B> 3. </B>the practice of leasing convict labor on contract to work on farms, in lumber camps, or at other jobs usually of heavy manual labor. </DL>
<A NAME="peonism">
<B>peonism, </B>noun. <B>=peonage.</B></DL>
<A NAME="peony">
<B>peony, </B>noun, pl. <B>-nies.</B><DL COMPACT><DD><B> 1. </B>a garden plant with large, showy flowers of various shades of red and white, often becoming double under cultivation. There are several kinds, comprising a genus of the crowfoot family. Peonies are perennials. <DD><B> 2. </B>its flower. Also, <B>paeony.</B> </DL>
