Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A dark area, especially the blackest part of a shadow from which all light is cut off.
- noun The completely dark central portion of the shadow cast by the earth, moon, or other body during an eclipse.
- noun The darkest region of a sunspot.
from The Century Dictionary.
- noun 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. - noun [lowercase] A sciænoid fish, Umbrina cirrosa; the umbrine. See cut under
Umbrina . - noun A shadow or shade.
- noun 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.
- noun In algebra, a symbol which, when paired with another, makes the symbol of a quantity. See
umbral notation , under umbral.
from the GNU version of the Collaborative International Dictionary of English.
- noun 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 . Seepenumbra . - noun The central dark portion, or nucleus, of a sun spot.
- noun The fainter part of a sun spot; -- now more commonly called
penumbra . - noun (Zoöl.) 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 alsoombre , andumbrine . - noun (Bot.) a tree (
Phytolacca dioica ) 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.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A
shadow . - noun astronomy The central region of a
sunspot .
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a region of complete shadow resulting from total obstruction of light
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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The word umbrella comes from the Latin word "umbra", meaning shade or shadow.
Nevermind the weather when you have an umbrella Kate Ravilious 2010
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Flavius this guy umbra is violent and scares the hell out of me.
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June 30th, 2006 at 10: 41 pm purvis ames says: umbra is mighty aphrodite.
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M. 1845.] 37 Feralis umbra, is the expression of Tacitus: it is surely a very bold one.] 38 Tacit.
The History of the Decline and Fall of the Roman Empire 1206
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The center of these spots is as black as a brunette cat, and is called the umbra, so called because it resembles an umbrella.
Remarks Bill Nye 1873
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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.
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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.
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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.
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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.
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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.
Kottu 2009
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