Annulus Definition

ănyə-ləs
annuli, annuluses
noun
annuli
Any ring or ringlike part, mark, etc.
Webster's New World
A ringlike figure, part, structure, or marking, such as a growth ring on the scale of a fish.
American Heritage Medicine
A ring or group of thick-walled cells around the sporangia of many ferns that functions in spore release.
American Heritage Medicine
The ringlike remains of a broken partial veil, found around the stipes of certain mushrooms.
American Heritage Medicine

A ring- or donut-shaped area or structure.

Wiktionary
Synonyms:

Other Word Forms of Annulus

Noun

Singular:
annulus
Plural:
annuli, annuluses

Origin of Annulus

  • Latin ānulus ring diminutive of ānus

    From American Heritage Dictionary of the English Language, 5th Edition

Annulus Sentence Examples

  • There is, in birds, no annulus tympanicus.

  • The expression for w in (i) § 29 may be increased by the addition of the term im log z =-m0 + im log r, (1) representing vortex motion circulating round the annulus of liquid.

  • The latter is thick and short, and the wall of the sporangium, which opens by a median slit, has a group of thick-walled cells at the summit, forming the annulus.

  • The sporangia dehisce by a transverse slit, the annulus being truly vertical or, in some of the genera in which they are regularly arranged, very slightly oblique.

  • In the experimental part of this thesis, a novel method of visualizing flow in a rotating two-layer annulus is implemented.

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Words Starting With

AANANN

Words Ending With

SUSLUS

Unscrambles

annulus

Words Starting With A and Ending With S

Starts With A & Ends With SStarts With AN & Ends With SStarts With A & Ends With US

Word Length

7 Letter Words7 Letter Words Starting With A7 Letter Words Ending With S