New American Oxford Dictionary
tagma
tagma |ˈtagmə | ▶noun ( pl. tagmata |-mətə | ) Zoology (in the bodies of arthropods and some other segmented animals ) a morphologically distinct region, typically comprising several adjoining segments, such as the head, thorax, and abdomen of insects. DERIVATIVES tagmatize verb (also tagmatise )ORIGIN early 20th cent.: from Greek, literally ‘something arranged ’, from tassein ‘set in order ’.
Oxford Dictionary
tagma
tagma |ˈtagmə | ▶noun ( pl. tagmata |-mətə | ) Zoology (in the bodies of arthropods and some other segmented animals ) a morphologically distinct region, typically comprising several adjoining segments, such as the head, thorax, and abdomen of insects. DERIVATIVES tagmatize verb (also tagmatise )ORIGIN early 20th cent.: from Greek, literally ‘something arranged ’, from tassein ‘set in order ’.