the fine sediment deposited at the front of a growing delta
a city in W Germany, in the Ruhr region. noun an industrial city in W Germany, in North Rhine-Westphalia in the Ruhr. Pop: 120 324 (2003 est)
small, protruding, reflecting ceramic tiles used on some roads instead of painted lines to mark lanes.
the toxin formed by botulinus and causing botulism. noun a potent toxin produced by the bacterium Clostridium botulinum in imperfectly preserved food, etc, causing botulism
a soil bacterium, Clostridium botulinum, that thrives and forms botulin under anaerobic conditions. Historical Examples Every Step in Canning Grace Viall Gray Every Step in Canning Grace Viall Gray noun (pl) -nuses an anaerobic bacterium, Clostridium botulinum, whose toxins (botulins) cause botulism: family Bacillaceae