| floor | 1. The bottom or lower part of any room; the part upon which we stand and upon which the movables in the room are supported. 2. The structure formed of beams, girders, etc, with proper covering, which divides a building horizontally into stories. Floor in sense 1 is, then, the upper surface of floor in sense 2. 3. The surface, or the platform, of a structure on which we walk or travel; as, the floor of a bridge. 4. A story of a building. See Story. 5. The part of the house assigned to the members. The right to speak. Instead of he has the floor, the English say, he is in possession of the house. 6. That part of the bottom of a vessel on each side of the keelson which is most nearly horizontal. 7. <chemical> The rock underlying a stratified or nearly horizontal deposit. A horizontal, flat ore body. Floor cloth, a heavy fabric, painted, varnished, or saturated, with waterproof material, for covering floors; oilcloth. Floor cramp, an implement for tightening the seams of floor boards before nailing them in position. Floor light, a frame with glass panes in a floor. Floor plan. A horizontal section, showing the thickness of the walls and partitions, arrangement of passages, apartments, and openings at the level of any floor of a house. Origin: AS. Flr; akin to D. Vloer, G. Flur field, floor, entrance hall, Icel. Flr floor of a cow stall, cf. Ir. & Gael. Lar floor, ground, earth, W. Llawr, perh. Akin to L. Planus level. Cf. Plain smooth. Source: Websters Dictionary (01 Mar 1998) |
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| floor cell | An obsolete term for the cell body of pillar cell's in the floor of the arch of Corti. (05 Mar 2000) |
| floor of orbit | The floor of the orbit; the shortest of the four walls of the orbit, sloping upward from the orbital margin; it is comprised of the maxilla and orbital process of the palatine bone. Synonym: paries inferior orbitae, inferior wall of orbit. (05 Mar 2000) |
| floor of tympanic cavity | The floor of the tympanic cavity; a thin plate of bone separating the tympanic cavity from the jugular fossa. Synonym: paries jugularis cavi tympani, fundus tympani, inferior wall of tympanic cavity, jugular wall of middle ear. (05 Mar 2000) |
| floor plate | Ventral midline thinning of the developing neural tube, a continuity between the basal laminae of either side; opposite of roof plate. Synonym: ventral plate. (05 Mar 2000) |
| floors and floorcoverings | The surface of a structure upon which one stands or walks. (12 Dec 1998) |
| pelvic floor | Soft floor composed mainly of two muscles. These are the levators of the anus and a pair of sacrosciatic ligaments. (12 Dec 1998) |
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