intercalate
Cross references: 1. introduce in.ter.ca.late \in-'t*r-k*-.la-t\ \in-.t*r-k*-'la--sh*n\ vt [L intercalatus, pp. of intercalare, fr. inter- + calareX to call, summon - more at LOW 1: to insert (as a day) in a calendar 2: to insert between or among existing elements or layers - in.ter.ca.la.tion n