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Umbra

Definition: 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.

Umbra

Definition: The central dark portion, or nucleus, of a sun spot.

Umbra

Definition: The fainter part of a sun spot; -- now more commonly called
penumbra.

Umbra

Definition: Any one of several species of sciaenoid food fishes of the
genus Umbrina, especially the Mediterranean species (U. cirrhosa),
which is highly esteemed as a market fish; -- called also ombre, and
umbrine.

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