Index of English words, starting with "um"

(1) - Umbonate (a.) Alt. of Umbonated

(1) - Umbra (n.) 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.
(2) - Umbra (n.) The fainter part of a sun spot; -- now more commonly called penumbra.
(3) - Umbra (n.) The central dark portion, or nucleus, of a sun spot.
(4) - 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.