In*ci"sive (?), a. [Cf. F.
incisif.]
1. Having the quality of incising, cutting,
or penetrating, as with a sharp instrument; cutting; hence, sharp;
acute; sarcastic; biting. "An incisive, high voice."
G. Eliot.
And her incisive smile accrediting
That treason of false witness in my blush.
Mrs.
Browning.
2. (Anat.) Of or pertaining to the
incisors; incisor; as, the incisive bones, the
premaxillaries.