Found 2 items, similar to life-sustaining.
English → English (WordNet) Definition: life-sustaining life-sustaining adj : performing an essential function in the living body; “vital organs”; “blood and other vital fluids”; “the loss of vital heat in shock”; “a vital spot”; “life-giving love and praise” [syn: vital]
English → English (gcide) Definition: life-sustaining life-sustaining \life-sustaining\ adj. being the seat or source of life; performing a necessary function in the living body; as, the need for life-sustaining air and water. Syn: vital. [WordNet 1.5 +PJC]