Index of English words, starting with "os"

(1) - Oscitancy (n.) Drowsiness; dullness; sluggishness.
(2) - Oscitancy (n.) The act of gaping or yawning.

(1) - Oscitation (n.) The act of yawning or gaping.

(1) - Osculant (a.) Intermediate in character, or on the border, between two genera, groups, families, etc., of animals or plants, and partaking somewhat of the characters of each, thus forming a connecting link; interosculant; as, the genera by which two families approximate are called osculant genera.
(2) - Osculant (a.) Adhering closely; embracing; -- applied to certain creeping animals, as caterpillars.
(3) - Osculant (a.) Kissing; hence, meeting; clinging.