Or´gan, n. Any individual part, or system of parts, of the body having a specific physiological function, considered with reference to its action, processes, or results. Eye, organ of sight; wing, organ of flight; stomach, liver, organs of digestion; muscles collectively, organs of locomotion.
Or´ganism, n. Any living body capable of separate existence.
Or´gasm, n. Immoderate excitement; said chiefly of sexual excitement, of which the orgasm is the height. Erethism.
Ornith´ic, a. Pertaining to birds.
Ornithocop´rolite, n. Fossil bird-dung.
Ornithol´ogy, n. Science of birds.
Ornithot´omy, n. Anatomy of birds.
Os, n.; gen. oris; pl. ora. Mouth. Cavum oris, cavity of the mouth.
Os, n.; gen. ossis; pl. ossa. Bone. Many or most names of individual bones are adjectives, used substantively, os or bone being understood; as, hyoid or hyoides, hyoid (bone) or (os) hyoides, etc. The quadrate bone or os quadratum is, as to its physical characters and office, not found in animals above birds; it hinges the lower jaw, pterygoid, and malar bones to the rest of the skull. It is regarded as the homologue of the mammalian incus by some, by others as probably homologous with the mammalian malleus.
Os´cine, a. Musical; capable of singing.