Œ-soph´a-gus (Gr.). Literally, that which carries food. The tube leading from the throat to the stomach; the gullet.
O-le-ag´i-nous (L. o´leum, oil). Of the nature of oil: applied to an important group of food-principles—the fats.
Ol-fac´to-ry (L. olfa´cio, to smell). Pertaining to the sense of smell.
Oph-thal´mo-scope (Gr. ὀφθαλμός, ophthalmos, the eye, and σκοπέω, skopeo, to look at). An instrument devised for examining the interior of the globe of the eye.
Op´tic (Gr. ὄπτω, opto, to see). Pertaining to the sense of sight.
Or´bit (L. or´bis, the socket). The bony socket or cavity in which the eyeball is situated.
Os´mose (Gr. ὠσμός, osmos, a thrusting or impulsion). The process by which liquids are impelled through a moist membrane.
Os´se-ous (L. os, a bone). Consisting of, or resembling bone.
Pal´ate (L. pala´tum, the palate). The roof of the mouth, consisting of the hard and soft palate.