umbra
(noun) a region of complete shadow resulting from total obstruction of light
Source: WordNet® 3.1
umbra (plural umbras or umbrae)
The fully shaded inner region of a shadow cast by an opaque object.
(astronomy) The area on the earth or moon experiencing the total phase of an eclipse.
(astronomy) The central region of a sunspot.
(chiefly, literary) A shadow.
(archaic) An uninvited guest brought along by one who was invited.
One of the family Umbridae of mudminnows.
A sciaenoid fish, the umbrine.
• antumbra
• penumbra
• Burma, rumba
Source: Wiktionary
Um"bra, n.; pl. Umbræ. Etym: [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. (Zoöl.)
Definition: Any one of several species of sciænoid 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).
Source: Webster’s Unabridged Dictionary 1913 Edition
24 April 2025
(noun) an obsolete term for the network of viscous material in the cell nucleus on which the chromatin granules were thought to be suspended
The first coffee-house in Mecca dates back to the 1510s. The beverage was in Turkey by the 1530s. It appeared in Europe circa 1515-1519 and was introduced to England by 1650. By 1675 the country had more than 3,000 coffee houses, and coffee had replaced beer as a breakfast drink.
