Im-păr'i-syl-lăb'ic, a.

a. [Fr. imparisyllabique, Sp. imparisilabo, from Lat. impar, unequal, and syllaba, syllable. See SYLLABLE, and cf. PARISYLLABIC.] (Gram.) Not consisting of an equal number of syllables; as, an imparisyllabic noun, one which has not the same number of syllables in all the cases; as, lapis, lapidis; mens, mentis.