UMBRA
\ˈʌmbɹə], \ˈʌmbɹə], \ˈʌ_m_b_ɹ_ə]\
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The central dark portion, or nucleus, of a sun spot.
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The fainter part of a sun spot; - now more commonly called penumbra.
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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.
By Oddity Software
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The central dark portion, or nucleus, of a sun spot.
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The fainter part of a sun spot; - now more commonly called penumbra.
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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.
By Noah Webster.
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A family of ESOCIFORMES comprising the mudminnows. There are three genera: Dallia, Novumbra, and Umbra, with much disagreement about their taxonomic interrelations. The Umbridae are freshwater fish inhabiting parts of the Northern Hemisphere.
By DataStellar Co., Ltd
Word of the day
Dopamine Acetyltransferase
- An enzyme that catalyzes the of groups from acetyl-CoA to arylamines. They have wide specificity for aromatic amines, particularly serotonin, and can also catalyze acetyl transfer between arylamines without CoA. EC 2.3.1.5.