from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A dark area, especially the blackest part of a shadow from which all light is cut off. See Synonyms at shade.
- n. Astronomy The completely dark portion of the shadow cast by the earth, moon, or other body during an eclipse.
- n. Astronomy The darkest region of a sunspot.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A shadow.
- n. The central region of a sunspot.
from the GNU version of the Collaborative International Dictionary of English
- 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.
- n. Any one of several species of sciænoid food fishes of the genus Umbrina, especially the Mediterranean species (Umbrina cirrhosa), which is highly esteemed as a market fish; -- called also ombre, and umbrine.
from The Century Dictionary and Cyclopedia
- n. A shadow or shade.
- n. Among the Romans, one who went to a feast merely at the solicitation of one invited: so called because he followed the guest as a shadow.
- n. In algebra, a symbol which, when paired with another, makes the symbol of a quantity. See umbral notation, under umbral.
- n. The only genus of Umbridæ; the mud-minnows. See minnow. 2 , and Umbridæ. There are two species, respectively of Europe and North America, U. krameri and U. limi.
- n. [lowercase] A sciænoid fish, Umbrina cirrosa; the umbrine. See cut under Umbrina.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a region of complete shadow resulting from total obstruction of light
The word umbrella comes from the Latin word "umbra", meaning shade or shadow.
June 30th, 2006 at 10: 41 pm purvis ames says: umbra is mighty aphrodite.
Flavius this guy umbra is violent and scares the hell out of me.
M. 1845.] 37 Feralis umbra, is the expression of Tacitus: it is surely a very bold one.] 38 Tacit.
The center of these spots is as black as a brunette cat, and is called the umbra, so called because it resembles an umbrella.
The most interesting parts occur when the moon plunges into Earth's full shadow, called the umbra, and of course during the period of totality.
PST, the partial phase of the eclipse will begin as the Earth's dark shadow - called the umbra - starts to slowly creep over the face of the full moon.
The umbra is the dark region where no light falls and the penumbra is the grey area where some light falls due to various phenomena.
This charming speech was forthwith repeated by her "umbra" in all parts of the room, which was now nearly filled with people, a mixed multitude, some of whom were frantic about music, others frantic about Wanda
The body of Christ was regarded by Marcion merely as an "umbra", a "phantasma."