| 释义 | 
		group b noun Usage: usually capitalized G&B, often attributive  : the Lancefield group of streptococci that comprises all strains of a species of the genus Streptococcus (S. agalactiae) and that includes the causative agents of certain infections (as septicemia, pneumonia, and meningitis) especially of newborn infants   < affected with Group B strep >  — compare group a herein |