Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

Medical Dictionary

O antigen

noun

Medical Definition of O antigen

  1. :  an antigen that occurs in the body of a gram-negative bacterial cell—called also somatic antigen; compare h antigen




Seen and Heard

What made you want to look up O antigen? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

in the capacity or character of

Get Word of the Day daily email!