Lexic.us

Definition of Annulus

1. Noun. A toroidal shape. "A halo of smoke"

2. Noun. (Fungi) a remnant of the partial veil that in mature mushrooms surrounds the stem like a collar.

Definition of Annulus

1. n. A ring; a ringlike part or space.

Definition of Annulus

1. Noun. A ring- or donut-shaped area or structure. ¹

2. Noun. (geometry) The region in a plane between two concentric circles of different radius. ¹

3. Noun. (topology) Any topological space homeomorphic to the region in a plane between two concentric circles of different radius. ¹

4. Noun. (astronomy) The ring of the sun not covered by the moon in an annular solar eclipse. ¹

5. Noun. (botany) Structure in a fern that consists of differentially thick-walled cells on a sporangium that bend and distort as a result of drying. ¹

6. Noun. (mycology) The membranous remnants of a partial veil which leaves a ring on the stem of a mushroom. ¹

7. Noun. (context: oil and gas production) The space contained between the centre well bore and any external tubing. Sometimes used for separated gas flow. ¹

¹ Source: wiktionary.com

Definition of Annulus

1. a ring or ringlike part [n -LI or -LUSES] : ANNULOSE [adj]

Medical Definition of Annulus

1. A ring-like structure. (18 Nov 2007)

Lexicographical Neighbors of Annulus

annulment annulments annuloid annuloida annuloplasties annuloplasty annuloplasty ring annulorrhaphy annulosa annulosan

annulosans annulose annulospiral ending annulospiral organ annuls annulus (current term) annulus ciliaris annulus conjunctivae annulus femoralis annulus fibrocartilagineus membranae tympani

annulus fibrosus annulus fibrosus cordis annulus fibrosus disci intervertebralis annulus fibrosus of intervertebral disc annulus haemorrhoidalis annulus iridis annulus iridis major

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