vital

vi*tal

adjective

{bc}of the utmost importance

vital capacity

noun

{bc}the breathing capacity of the lungs expressed as the number of cubic inches or cubic centimeters of air that can be forcibly exhaled after a full inspiration

vital signs

plural noun

{bc}signs of life

vital statistics

plural noun

{bc}statistics relating to births, deaths, marriages, health, and disease

élan vi*tal

noun

{bc}the vital force or impulse of life