‖n. pl. [ NL. See Tessellate. ] (Zool.) A division of Crinoidea including numerous fossil species in which the body is covered with tessellated plates. [ 1913 Webster ]
a. 1. Formed of little squares, as mosaic work; checkered; as, a tessellated pavement. [ 1913 Webster ]
2. (Bot. & Zool.) Marked like a checkerboard; as, a tessellated leaf. [ 1913 Webster ]