群体免疫 qúntǐmiǎnyì herd immunity Origin Definitions Defs Strokes Stroke Words Sentences Sents 群体 群體 qúntǐ colony (bound form) A group of organisms of the same species living in close association; a biological colony or population.免疫 miǎnyì adjectivenoun immunity Biological resistance to a specific disease, pathogen, or toxin; to be immune