vi·tal·i·ty 
(vī-tălĭ-tē)
(vī-tălĭ-tē)n. pl. vi·tal·i·ties
1.
a. The capacity to live, grow, or develop: plants that lost their vitality when badly pruned.
b. The characteristic, principle, or force that distinguishes living things from nonliving things.
2. Physical or intellectual vigor; energy or liveliness. See Synonyms at vigor.
3. The capacity to endure: the vitality of an old tradition.