Ox i da' tion. The process of combining with oxygen.

Ox' y gen. The active element of the air.

Pal' ate (palatum, the palate). Roof of the mouth.

Pan' cre as (pas, all; kreas, flesh). An organ of digestion.

Pa pil' la, plu. papillæ. Tiny cone-like projections.

Pa ral' y sis. A disease in which one loses sensation, or the power of motion, or both.

Pa rot' id (para, near; ous, otos, ear). One of the salivary glands.

Pa tel' la (a little dish). The kneepan.

Pec' to ral. Pertaining to the chest.

Pep' sin (pepto, I digest). The chief constituent of the gastric juice.