Definitions of umbra
The word umbra uses 5 letters: a, b, m, r, u
umbra is playable in:
Meanings of umbra
n. - The conical shadow projected from a planet or satellite, on the side opposite to the sun, within which a spectator could see no portion of the sun's disk; -- used in contradistinction from penumbra. See Penumbra.
n. - The central dark portion, or nucleus, of a sun spot.
n. - The fainter part of a sun spot; -- now more commonly called penumbra.
Hook words of umbra
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Direct anagrams of umbra
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