ˈtagˌmēm, ˈtaig- noun
( -s )
Etymology: Greek tagma arrangement, order, row + English -eme
1. : a constituent of a meaningful grammatical relation that cannot be analyzed into smaller meaningful features and that may be marked by features of word order, selection of allomorphs, agreement with finite verb forms, and elaboration by preceding adjectival modifiers
2. : the class of grammatical forms that function in a particular grammatical relation