1. (a.) Belonging or relating to life, either animal or vegetable; as, vital energies; vital functions; vital actions.

2. (a.) Contributing to life; necessary to, or supporting, life; as, vital blood.

3. (a.) Containing life; living.

4. (a.) Being the seat of life; being that on which life depends; mortal.

5. (a.) Very necessary; highly important; essential.

6. (a.) Capable of living; in a state to live; viable.

7. (n.) A vital part; one of the vitals.