alphabet

Umbra

Definition of umbra:

part of speech: noun

A shade or shadow; especially, the dark cone of shadow cast by a planet or satellite on the side opposite to the sun, in whose limits the sun's disk is invisible.

Usage examples for umbra:

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Detachment

The act of separating; the thing separated; a body of troops, or certain ships, separated from the main body and sent on special service. ...

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