tagma
noun
tag·ma
ˈtagmə
plural tagmata
-mətə
: a compound body section of an arthropod resulting from embryonic fusion of two or more somites (as the cephalothorax of a spider) or consisting of two or more distinguishable segments (as the thorax of an insect)
Word History
Etymology
New Latin, from Greek tagma arrangement, order, row, from tassein, tattein to arrange