n 1  cap  :  a genus of short rigid motile bacteria of the family Vibrionaceae that are straight or curved rods, have one or sometimes two or three polar flagella enclosed in a sheath, and include various saprophytes and a few pathogens (as V. cholerae, the cause of cholera in humans)  2  :  any bacterium of the genus Vibrio : broadly  :  a curved rod-shaped bacterium .
 
 
 
Similar sounding terms:  fi·ber  fibre 
 
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