| • |
A discus; a quoit. |
| • |
A flat, circular plate; as, a disk of metal or paper. |
| • |
The circular figure of a celestial body, as seen projected of
the heavens. |
| • |
A circular structure either in plants or animals; as, a blood
disk; germinal disk, etc. |
| • |
The whole surface of a leaf. |
| • |
The central part of a radiate compound flower, as in
sunflower. |
| • |
A part of the receptacle enlarged or expanded under, or
around, or even on top of, the pistil. |
| • |
The anterior surface or oral area of coelenterate animals, as
of sea anemones. |
| • |
The lower side of the body of some invertebrates, especially
when used for locomotion, when it is often called a creeping disk. |
| • |
In owls, the space around the eyes. |
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