Entry 1 sense Webster, 1913 Tricurvate /(trī̇*kûr"vā̇t)/ · Tri·cur·vate · IPA 01 a. Curved in three directions; as, a tricurvate spicule (see Illust. of Spicule). 1. Curved in three directions; as, a tricurvate spicule (see Illust. of Spicule).(Zool.) See: Spicule