vital

vi·tal

adj \ˈvīt-^əl\

Definition of VITAL

1

a : existing as a manifestation of life b : concerned with or necessary to the maintenance of life <vital organs> <blood and other vital fluids>

2

: characteristic of life or living beings <vital activities>

3

: recording data relating to lives <vital records>

4

: of, relating to, or constituting the staining of living tissues

—vi·tal·ly \-^əl-ē\ adverb