| Words | Parts of Speech | Meaning/Definition/Similar Words |
|---|---|---|
| oscines | noun pl. | Singing birds; a group of the Passeres, having numerous syringeal muscles, conferring musical ability. |
| osculum | noun | Same as Oscule. |
| osiered | adjective | Covered or adorned with osiers; as, osiered banks. |
| osmanli | noun | A Turkish official; one of the dominant tribe of Turks; loosely, any Turk. |
| osmious | adjective | Denoting those compounds of osmium in which the element has a valence relatively lower than in the osmic compounds; as, osmious chloride. |
| osmosis | noun | Osmose. |
| osmotic | adjective | Pertaining to, or having the property of, osmose; as, osmotic force. |
| osselet | noun | A little bone., The internal bone, or shell, of a cuttlefish. |
| osseous | adjective | Composed of bone; resembling bone; capable of forming bone; bony; ossific. |
| osseter | noun | A species of sturgeon. |
| ossicle | noun | A little bone; as, the auditory ossicles in the tympanum of the ear., One of numerous small calcareous structures forming the skeleton of certain echinoderms, as the starfishes. |
| ossific | adjective | Capable of producing bone; having the power to change cartilage or other tissue into bone. |
| ossuary | noun | A place where the bones of the dead are deposited; a charnel house. |
| osteler | noun | Same as Hosteler. |
| osteoid | adjective | Resembling bone; bonelike. |
| osteoma | noun | A tumor composed mainly of bone; a tumor of a bone. |
| ostiary | noun | The mouth of a river; an estuary., One who keeps the door, especially the door of a church; a porter. |
| ostiole | noun | The exterior opening of a stomate. See Stomate., Any small orifice. |
| ostitis | noun | See Osteitis. |
| ostlery | noun | See Hostelry. |
| ostosis | noun | Bone formation; ossification. See Ectostosis, and Endostosis. |
| ostrich | noun | A large bird of the genus Struthio, of which Struthio camelus of Africa is the best known species. It has long and very strong legs, adapted for rapid running; only two toes; a long neck, nearly bare of feathers; and short wings incapable of flight. The adult male is about eight feet high. |