Pro-lapse´. The falling down, or sinking, of a part or viscus.

Pro-lep´sis. The anticipation and nullification of complications before they arise.

Prom´´on-to´ry. A projecting eminence or process.

Pro´phy-lax´´is. The prevention of disease.

Pro´te-in. Any one of a group of nitrogenized, noncrystallizable compounds similar to each other, widely distributed in the animal and vegetable kingdoms, and forming the characteristic constituents of the tissues and fluids of the animal body. They are formed by plants, the animal organism receiving them as food and transforming and assimilating them. They all contain carbon, hydrogen, nitrogen, oxygen and sulphur. Some of the most important are albumin, casein, legumin, fibrin, myosin and glutin.

Psy´chic. Pertaining to the mind.

Pu´bes. That part of the lower central hypogastric region which, in the adult, is covered with hair. The pubic region.

Pu´bic. Pertaining to the pubes, or os pubis.

Pu´ber-ty. The age at which the reproductive organs become functionally operative.

Pu´bi-ot´´o-my. (He-bos´te-ot´´omy.) The operation of cutting through the pubic bone, lateral to the median line.