Pronunciation: (vī'u-bul),[key] —adj. 1. capable of living.
2. Physiol. a. physically fitted to live.
b. (of a fetus) having reached such a stage of development as to be capable of living, under normal conditions, outside the uterus.
3. Bot.able to live and grow.
4. vivid; real; stimulating, as to the intellect, imagination, or senses: a period of history that few teachers can make viable for students. 5. practicable; workable: a viable alternative. 6. having the ability to grow, expand, develop, etc.: a new and viable country.