
Photobacterium is a genus of gram-negative bacteria in the family Vibrionaceae. Members of the genus are bioluminescent, that is they have the ability to emit light. Many species, including Photobacterium leiognathi and Photobacterium phosphoreum, live in symbiosis with marine organisms. Species such as Photobacterium profundum are adapted for opt...
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http://en.wikipedia.org/wiki/Photobacterium

• (n.) A genus including certain comma-shaped marine bacteria which emit bluish or greenish phosphorescence. Also, any microorganism of this group.
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A genus of gram-negative, facultatively anaerobic, rod-shaped bacteria that are common in the marine environment and on the surfaces and in the intestinal contents of marine animals. Some species are bioluminescent and are found as symbionts in specialised luminous organs of fish. ... (12 Dec 1998) ...
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Pho`to·bac·te'ri·um noun [ New Latin See
Photo- , and
Bacterium .]
(Bacteriol.) A genus including certain comma-shaped marine bacteria which emit bluish or greenish phosphorescence. Also, any microörganism of this group.
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http://www.encyclo.co.uk/webster/P/76

Type: Term Pronunciation: fō′tō-bak-tē′rē-ŭm Definitions: 1. A genus of motile and nonmotile, aerobic to facultatively anaerobic bacteria (family Pseudomonadaceae) containing gram-negative coccobacilli and occasional rods; under adverse conditions pleomorphic forms frequently occur. Motile cells have polar flage...
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photobacterium 1. A genus including certain comma-shaped marine bacteria which emit bluish or greenish phosphorescence. 2. Bacteria that are common in the marine environment and on the surfaces and in the intestinal contents of marine animals. Some species are bioluminescent (they have the ability to emit light) and are found as symbionts in speci...
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