1. the energy or spirit which animates living creatures; the soul: "the principle which animates the human being can be visualized as the vital force"
▪ (in some theories, particularly that of Bergson) a hypothetical force, independent of physical and chemical forces, regarded as being the causative factor in the evolution and development of living organisms.
▪ a person or thing that gives something vitality and strength:"he was a vital force in British music"