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Definition of Annulus

Babylon English

ring; ring-like object
Annulus Definition from Arts & Humanities Dictionaries & Glossaries
JM Latin-English Dictionary
N M
ring; (anulus variant); [~ Piscatoris => Pope's ring w/St. Peter casting net]
Annulus Definition from Language, Idioms & Slang Dictionaries & Glossaries
Webster's Revised Unabridged Dictionary (1913)
(n.)
The solid formed by a circle revolving around a line which is the plane of the circle but does not cut it.
  
(n.)
Ring-shaped structures or markings, found in, or upon, various animals.
  
(n.)
A space contained between the circumferences of two circles, one within the other.
  
(n.)
A ring; a ringlike part or space.
  
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About
hEnglish - advanced version

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?l.) ring-shaped structures or markings, found in, or upon, various animals.
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

WordNet 2.0

Noun
1. a toroidal shape; "a ring of ships in the harbor"; "a halo of smoke"
(synonym) ring, halo, anulus, doughnut, anchor ring
(hypernym) toroid
(hyponym) fairy ring, fairy circle
2. (Fungi) remnant of the partial veil that in mature mushrooms surrounds the lower part of the stem
(hypernym) plant part, plant structure
(part-holonym) partial veil, velum
(classification) Fungi, kingdom Fungi, fungus kingdom
Annulus Definition from Business & Finance Dictionaries & Glossaries
Glossary of petroleum Industry
(See annular space.)
Annulus Definition from Science & Technology Dictionaries & Glossaries
Oil and Gas Field Glossary
The space between the casing and the wall of the wellbore, between two strings of casing, between production tubing and casing or between coiled tubing and tubing or casing.
Dictionary of Automotive Terms
See Epicyclic gearbox
Annulus Definition from Encyclopedia Dictionaries & Glossaries
Wikipedia English - The Free Encyclopedia
Annulus (or anulus) or annular may refer to:
Annulus is Latin for little ring.

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The Annulus (sometimes rendered ANNULUS) is a fictional criminal organization featured in the Azteca Productions' Universe created by Richard Dominguez. The Annulus is a South American-based secret cabal of businessmen, each a notorious drug lord from a different part of the world. Its purpose is to dominate the drug trade.

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Annulus Definition from Society & Culture Dictionaries & Glossaries
Environmental Engineering (English ver.)
For a well, the space between the pipe and the outer wall (casing) of the borehole, which may be a pipe also (the well casing).
Annulus Definition from Medicine Dictionaries & Glossaries
Dictionary of Medicine (Shahram)
noun
ring, structure shaped like a ring