- (a.) Contributing to life; necessary to or supporting, life; as, vital blood.
- (a.) Belonging or relating to life, either animal or vegetable; as, vital energies; vital functions; vital actions.
- (a.) Containing life; living.
- (a.) Being the seat of life; being that on which life depends; mortal.
- (n.) A vital part; one of the vitals.
- (a.) Capable of living; in a state to live; viable.
- (a.) Very necessary; highly important; essential.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). vital. Retrieved September 23, 2026, from http://smartdefine.org/vital/definitions/2079946 |
| Chicago | Webster's. 2011. "vital" http://smartdefine.org/vital/definitions/2079946 (accessed September 23, 2026). |
| Harvard | Webster's 2011, vital, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/vital/definitions/2079946>. |
| MLA | Webster's. "vital" 28 May 2011. Web. 23 September 2026. <http://smartdefine.org/vital/definitions/2079946> |