/vuy tal"i tee/ , n. , pl. vitalities .
1. exuberant physical strength or mental vigor: a person of great vitality.
2. capacity for survival or for the continuation of a meaningful or purposeful existence: the vitality of an institution.
3. power to live or grow: the vitality of a language.
4. vital force or principle.
[ 1585-95; vitalitas, equiv. to vitali ( s ) VITAL + -tas- -TY 2 ]