Definition, synonyms and related words
A heteroclitic noun.
In linguistics, particularly Indo-European Studies, signifying a stem which alternates between more than one form when declined for grammatical case. Examples of heteroclitic noun stems in Proto-Indo-European include *wod-r/n- "water" (nominoaccusative *wódr; genitive *udnés; locative *udén) and *yékʷ-r/n- "liver" (nominoaccusative *yékʷr, genitive *ikʷnés). In Proto-Indo-European, heteroclitic stems tend to be noun stems with grammatically inanimate gender.