/den tish"euhn/ , n.
1. the makeup of a set of teeth including their kind, number, and arrangement.
2. the eruption or cutting of the teeth; teething; odontiasis.
[ 1605-15; dentition- (s. of dentitio), equiv. to dentit ( us ) (ptp. of dentire to cut teeth, teethe) + -ion- -ION ]