Entry 1 sense Webster, 1913 Sclerite /(sklē"rīt)/ · Scle·rite · IPA 01 n. A hard chitinous or calcareous process or corpuscle, especially a spicule of the Alcyonaria. 1. A hard chitinous or calcareous process or corpuscle, especially a spicule of the Alcyonaria.(Zool.)