Ptilosis, tī-lō′sis, n. plumage or mode of feathering of a bird.—Also Pterylō′sis. [Gr. ptilon, a feather.]
Ptisan, tiz′an, n. a medicinal drink made from barley with other ingredients. [Gr. ptisanē, peeled barley, barley-water—ptissein, to peel.]
Ptochocracy, tō-kok′ra-si, n. the rule of paupers.—n. Ptochog′ony, the production of beggars—wholesale pauperisation. [Gr. ptōchos, a beggar.]
Ptolemaic, tol-e-mā′ik, adj. pertaining to the race of Egyptian kings called the Ptolemies: pertaining to Ptolemy the astronomer (of the 2d century)—also Ptolemæ′an.—n. Ptolemā′ist, one who believes in the Ptolemaic system of astronomy.—Ptolemaic system, the method by which Ptolemy, the astronomer, explained the structure of the heavens and the motions of the heavenly bodies (139 A.D.).
Ptomaïne, tō′ma-in, n. a somewhat loosely used generic name for those bodies, usually poisonous, formed from animal tissues during putrefaction—putrescine, cadaverine, creatinin, neurin, choline, muscarine, &c.—Also Ptō′maïn. [Gr. ptōma, a corpse—piptein, to fall.]
Ptosis, tō′sis, n. inability to raise the upper eyelid. [Gr.,—piptein, to fall.]
Ptyalin, -e, tī′a-lin, n. the nitrogenous essential principle of saliva.—v.i. Pty′alise, to salivate.—n. Pty′alism, salivation.—adj. Ptyalogog′ic.—ns. Ptyal′ogogue, Ptys′magogue, a medicine which causes salivation. [Gr.,—ptuein, to spit.]
Pub, pub, n. (slang) a public-house, tavern.
Puberty, pū′bėr-ti, n. the age of full development: early manhood or womanhood: the period when a plant begins to flower.—adjs. Pū′beral; Pūber′ulent, covered with very fine downy hairs.—ns. Pū′bes, the pubic region, the hair growing thereon at puberty; Pūbes′cence, state of one arrived at puberty: (bot.) the soft, short hair on plants.—adj. Pūbes′cent, arriving at puberty: (bot., zool.) covered with soft, short hair; Pubig′erous, pubescent. [Fr. puberté—L. pubertas, -tatis—pubes, puber, grown up.]
Pubis, pū′bis, n. a bone of the pelvis which in man forms the anterior portion of the os innominatum.—adjs. Pū′bic; Pubofem′oral; Pū′bo-il′iac; Pū′bo-is′chiac; Puboprostat′ic; Pū′bo-urē′thral; Puboves′ical. [For os pubis, gen. of pubes, grown up.]