1392, from O.Fr.
incision (13c.), from L.
incisionem (nom.
incisio) "a cutting into," noun of action from
incidere "to cut in," from from
in- "into" +
-cidere, comb. form of
caedere "to cut" (see
concise).
Incisive (1597), from M.L.
incisivus originally was lit., "cutting with a sharp edge;" fig. sense of "mentally acute" first recorded 1850 as a borrowing from Fr.