P
1: a multivalent nonmetallic element of the nitrogen family that occurs commonly in inorganic phosphate rocks and as organic phosphates in all living cells; is highly reactive and occurs in several al...
p-n junction
1: the junction between a p-type semiconductor and an n-type semiconductor; "a p-n junction has marked rectifying characteristics"
p-n-p transistor
1: a junction transistor having an n-type semiconductor between a p-type semiconductor that serves as an emitter and a p-type semiconductor that serves as a collector
p-type semiconductor
1: a semiconductor in which electrical conduction is due chiefly to the movement of positive holes
P. G. Wodehouse
1: English writer known for his humorous novels and stories (1881-1975) [syn: {Wodehouse}, {Pelham Grenville Wodehouse}]
P. P. von Mauser
1: German arms manufacturer and inventor of a repeating rifle and pistol (1838-1914) [syn: {Mauser}, {von Mauser}, {Peter Paul Mauser}]
P. T. Barnum
1: United States showman who popularized the circus (1810-1891) [syn: {Barnum}, {Phineas Taylor Barnum}]
P.A.
1: an electronic amplification system used as a communication system in public areas [syn: {public address system}, {P.A. system}, {PA system}, {PA}] adv : by the year; every year (usually with refere...
P.A. system
1: an electronic amplification system used as a communication system in public areas [syn: {public address system}, {PA system}, {P.A.}, {PA}]
P.E.
1: the mechanical energy that a body has by virtue of its position; stored energy [syn: {potential energy}]
p.m.
1: after noon [syn: {post meridiem}, {pm}] adv : between noon and midnight; "let's meet at 8 P.M." [syn: {post meridiem}, {PM}]
P.O.
1: a noncommissioned officer in the navy with a rank comparable to sergeant in the army [syn: {petty officer}, {PO}]
P/E ratio
1: (stock market) the price of a stock divided by its earnings [syn: {price-to-earnings ratio}]
pa
1: an informal term for a father; probably derived from baby talk [syn: {dad}, {dada}, {daddy}, {papa}, {pappa}, {pater}, {pop}] 2: a short-lived radioactive metallic element formed from uranium and d...
PA system
1: an electronic amplification system used as a communication system in public areas [syn: {public address system}, {P.A. system}, {P.A.}, {PA}]
pa'anga
1: the basic unit of money in Tonga
PABA
1: a metabolic acid found in yeast and liver cells; used to make dyes and drugs and sunblockers [syn: {para aminobenzoic acid}]
Pabir
1: a Chadic language spoken south of Lake Chad [syn: {Bura}]
Pablo Casals
1: an outstanding Spanish cellist noted for his interpretation of Bach's cello suites (1876-1973) [syn: {Casals}]
Pablo Neruda
1: Chilean poet (1904-1973) [syn: {Neruda}, {Reyes}, {Neftali Ricardo Reyes}]
Pablo Picasso
1: prolific and influential Spanish artist who lived in France (1881-1973) [syn: {Picasso}]
Pablum
1: a soft form of cereal for infants 2: worthless or oversimplified ideas [syn: {pap}]
pabulum
1: any substance that can be used as food [syn: {comestible}, {edible}, {eatable}, {victual}, {victuals}] 2: insipid intellectual nourishment
PAC
1: committee formed by a special-interest group to raise money for their favorite political candidates [syn: {political action committee}]
pac-man strategy
1: the target company defends itself by threatening to take over its acquirer
paca
1: large burrowing rodent of South America and Central America; highly esteemed as food [syn: {Cuniculus paca}]
pace
1: the rate of moving (especially walking or running) [syn: {gait}] 2: the distance covered by a step; "he stepped off ten paces from the old tree and began to dig" [syn: {footstep}, {step}, {stride}]...
pace car
1: a high-performance car that leads a parade of competing cars through the pace lap and then pulls off the course
pace lap
1: the first lap of a car race that prepares the cars for a fast start
pacemaker
1: a leading instance in its field; "the new policy will be a pacesetter in community relations" [syn: {pacesetter}] 2: a specialized bit of heart tissue that controls the heartbeat [syn: {cardiac pac...
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pacer
1: a horse used to set the pace in racing [syn: {pacemaker}, {pacesetter}] 2: a horse trained to a special gait in which both feet on one side leave the ground together
pacesetter
1: a leading instance in its field; "the new policy will be a pacesetter in community relations" [syn: {pacemaker}] 2: a horse used to set the pace in racing [syn: {pacer}, {pacemaker}]
pacha
1: a civil or military authority in Turkey or Egypt [syn: {pasha}]
pachinko
1: a Japanese pinball game played on a vertical board
pachisi
1: an ancient board game resembling backgammon; played on a cross-shaped board
pachouli
1: small East Indian shrubby mint; fragrant oil from its leaves is used in perfumes [syn: {patchouli}, {patchouly}, {Pogostemon cablin}] 2: a heavy perfume made from the patchouli plant [syn: {patchou...
pachuco
1: a Mexican-American teenager who belongs to a neighborhood gang and who dresses in showy clothes
Pachycephala
1: arboreal insectivorous birds [syn: {genus Pachycephala}]
pachycephalosaur
1: bipedal herbivore having 10 inches of bone atop its head; largest bone-headed dinosaur ever found [syn: {pachycephalosaurus}]
pachycephalosaurus
1: bipedal herbivore having 10 inches of bone atop its head; largest bone-headed dinosaur ever found [syn: {pachycephalosaur}]
pachyderm
1: any of various nonruminant hoofed mammals having very thick skin: elephant; rhinoceros; hippopotamus
pachyderma
1: thickening of the skin (usually unilateral on an extremity) caused by congenital enlargement of lymph vessel and lymph vessel obstruction [syn: {nevoid elephantiasis}]
pachydermal
1: of or relating to or characteristic of pachyderms [syn: {pachydermatous}, {pachydermic}, {pachydermous}]
pachydermatous
1: of or relating to or characteristic of pachyderms [syn: {pachydermal}, {pachydermic}, {pachydermous}] 2: emotionally hardened; "a callous indifference to suffering"; "cold-blooded and indurate to p...
pachydermic
1: of or relating to or characteristic of pachyderms [syn: {pachydermatous}, {pachydermal}, {pachydermous}]
pachydermous
1: of or relating to or characteristic of pachyderms [syn: {pachydermatous}, {pachydermal}, {pachydermic}]
Pachyrhizus
1: small genus of tropical vines having tuberous roots [syn: {genus Pachyrhizus}]
Pachyrhizus erosus
1: Central American twining plant with edible roots and pods; large tubers are eaten raw or cooked especially when young and young pods must be thoroughly cooked; pods and seeds also yield rotenone an...
Pachyrhizus tuberosus
1: twining plant of Amazon basin having large edible roots [syn: {yam bean}, {potato bean}]
pachysandra
1: any plant of the genus Pachysandra; low-growing evergreen herbs or subshrubs having dentate leaves and used as ground cover
Pachysandra procumbens
1: low semi-evergreen perennial herb having small spikes of white or pinkish flowers; native to southern United States but grown elsewhere [syn: {Allegheny spurge}, {Allegheny mountain spurge}]
Pachysandra terminalis
1: slow-growing Japanese evergreen subshrub having terminal spikes of white flowers; grown as a ground cover [syn: {Japanese spurge}]
pachytene
1: the third stage of the prophase of meiosis
pacific
1: promoting peace; "the result of this pacific policy was that no troops were called up" 2: relating to or bordering the Pacific Ocean; "Pacific islands" 3: disposed to peace or of a peaceful nature;...
Pacific bonito
1: probably a northern strain of Chile bonito [syn: {Sarda lineolata}]
Pacific cod
1: closely related to Atlantic cod [syn: {Alaska cod}, {Gadus macrocephalus}]
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