Adjacent Words

Umbra definitions

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Webster's 1828 Dictionary

UM'BRA, n. A fish caught in the Mediterranean, generally about 12 or 14 inches long, but sometimes growing to the weight of 60 pounds. It is called also thromis and corvo.

WordNet (r) 3.0 (2005)

n
1: a region of complete shadow resulting from total obstruction of light

Merriam Webster's

noun (plural umbras or umbrae) Etymology: Latin Date: 1638 1. a shaded area 2. a. a conical shadow excluding all light from a given source; specifically the conical part of the shadow of a celestial body excluding all light from the primary source b. the central dark part of a sunspot • umbral adjective

Oxford Reference Dictionary

n. (pl. umbras or umbrae) Astron. 1 a total shadow usu. cast on the earth by the moon during a solar eclipse. 2 the dark central part of a sunspot (cf. PENUMBRA). Derivatives: umbral adj. Etymology: L, = shade

Webster's 1913 Dictionary

Ombre Om"bre, n. [F., of uncertain origin.] (Zo["o]l.) A large Mediterranean food fish (Umbrina cirrhosa): -- called also umbra, and umbrine.

Webster's 1913 Dictionary

Penumbra Pe*num"bra, n. [NL., fr. L. paene almost + umbra shade.] 1. An incomplete or partial shadow. 2. (Astron.) The shadow cast, in an eclipse, where the light is partly, but not wholly, cut off by the intervening body; the space of partial illumination between the umbra, or perfect shadow, on all sides, and the full light. --Sir I. Newton. Note: The faint shade surrounding the dark central portion of a solar spot is also called the penumbra, and sometimes umbra. 3. (Paint.) The part of a picture where the shade imperceptibly blends with the light.

Webster's 1913 Dictionary

Umbra Um"bra, n.; pl. Umbr[ae]. [L., a shadow.] 1. (Astron.) (a) 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. (b) The central dark portion, or nucleus, of a sun spot. (c) The fainter part of a sun spot; -- now more commonly called penumbra. 2. (Zo["o]l.) Any one of several species of sci[ae]noid 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. Umbra tree (Bot.), a tree (Phytolacca diocia) of the same genus as pokeweed. It is native of South America, but is now grown in southern Europe. It has large dark leaves, and a somber aspect. The juice of its berries is used for coloring wine. --J. Smith (Dict. Econ. Plants).

Soule's Dictionary of English Synonyms

n. [L.] Shade.

Moby Thesaurus

adumbration, dark shade, eidolon, ghost, gloom, haunt, mere shadow, penumbra, phantasm, phantom, revenant, shade, shadiness, shadow, shadows numberless, silhouette, skiagram, skiagraph, spook, umbrage, umbrageousness