Find the word definition

The Collaborative International Dictionary
Diptote

Diptote \Dip"tote\, n. [Gr. ?; di- = di`s- twice + ? falling, fr. ? to fall: cf. F. diptote.] (Gram.) A noun which has only two cases.
--Andrews.

Wiktionary
diptote

n. (cx grammar English) In grammar, a noun which has only two case. In Modern Standard Arabic, nouns belong to triptote or diptotes, or can be indeclinable.