annulus

Noun

Meaning

A ring; a ringlike part or space.

A space contained between the circumferences of two circles, one within the other.

The solid formed by a circle revolving around a line which is the plane of the circle but does not cut it.

Ring-shaped structures or markings, found in, or upon, various animals.

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Examples

a ring of ships in the harbor Source: Internet

a halo of smoke Source: Internet

A Laurent series is thus any series of the form : If such a series converges, then in general it does so in an annulus rather than a disc, and possibly some boundary points. Source: Internet

Mushrooms lacking partial veils do not form an annulus. Source: Internet

The resulting violent expulsion of fluid from the annulus is one potential cause or contributor to the "kick". citation (Kicks, which can cause blowouts, typically do not involve hydrates: see Blowout: formation kick ). Source: Internet

The system consists of a circular annulus in the condenser, which produces a cone of light. Source: Internet

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