群ぐん体たいぐんたいMeanings1nouncolonybiologyBiology term for a group of organisms of the same species living closely together, such as coral, bacteria, or social insects.サンゴの群ぐん体たいが広ひろがっている。A coral colony is spreading.細さい菌きんは寒かん天てん培ばい地ち上じょうで群ぐん体たいを形けい成せいした。The bacteria formed colonies on the agar plate.