onyxis. Ingrowing toe-nail.
opisthotonos. Spasmodic rigidity of the body in which the trunk is thrown backward and arched upward.
oral. Relating to the mouth.
organic. Pertaining to or having organs, exhibiting animal or vegetable characteristics.
orthoform. A white, odorless, crystalline powder; employed as a local anesthetic and antiseptic in burns, ulcers, etc.
orthopedics. That branch of surgery which treats of chronic diseases of the joints and spine and the correction of deformities. (See chiropodial orthopedics.)
os (plural ossa). Bone.
osis. Full of, as in tuberculosis, a specific disease caused by the presence of the bacillus tuberculosis.
osseous. Bony.