The Collaborative International Dictionary of English v.0.48:
liveness \liveness\ n. The quality of having animal life as distinguished from plant life. Syn: animateness, aliveness. [WordNet 1.5]WordNet (r) 3.0 (2006):
liveness n 1: the property of being animated; having animal life as distinguished from plant life [syn: animateness, aliveness, liveness] [ant: inanimateness, lifelessness]