- (n.) The whole surface of a leaf.
- (n.) The circular figure of a celestial body, as seen projected of the heavens.
- (n.) A discus; a quoit.
- (n.) In owls, the space around the eyes.
- (n.) A circular structure either in plants or animals; as, a blood disk; germinal disk, etc.
- (n.) The lower side of the body of some invertebrates, especially when used for locomotion, when it is often called a creeping disk.
- (n.) A flat, circular plate; as, a disk of metal or paper.
- (n.) A part of the receptacle enlarged or expanded under or around or even on top of, the pistil.
- (n.) The central part of a radiate compound flower, as in sunflower.
- (n.) The anterior surface or oral area of coelenterate animals, as of sea anemones.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). disk. Retrieved September 20, 2026, from http://smartdefine.org/disk/definitions/1998774 |
| Chicago | Webster's. 2011. "disk" http://smartdefine.org/disk/definitions/1998774 (accessed September 20, 2026). |
| Harvard | Webster's 2011, disk, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/disk/definitions/1998774>. |
| MLA | Webster's. "disk" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/disk/definitions/1998774> |