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more about annulus
annulus |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Annulus \An"nu*lus\, n.; pl {Annuli}. [L.] 1. A ring; a ringlike part or space. 2. (Geom.) a A space contained between the circumferences of two circles, one within the other b The solid formed by a circle revolving around a line which is the plane of the circle but does not cut it 3. (Zo["o]l.) Ring-shaped structures or markings, found in or upon various animals. From WordNet r 1.6 [wn]: annulus n 1: a toroidal shape; "a ring of ships in the harbor"; "a halo of smoke" [syn: {ring}, {halo}, {anulus}, {doughnut}, {anchor ring}] 2: (fungi) remnant of the partial veil that in mature mushrooms surrounds the lower part of the stem
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