core [L, cor, heart] , 1. a kind of main computer memory. 2. main bank or repository for receiving all specimens and collections. Also called laboratory core. 3. (in dentistry) a section of a mold, usually of plaster, made over assembled parts of a dental restoration to record and maintain their relationships so that the parts can be reassembled in their original position; the retainer portion to which a dental restoration is attached. See composite core, cast core, cast post. 4. the center of a structure, as in core temperature of the body.
