Viable Definition

vīə-bəl

adjective

Capable of success or continuing effectiveness; practicable.

A viable plan; a viable national economy.

American Heritage

Able to live.

Webster's New World

Workable and likely to survive or to have real meaning, pertinence, etc.

A viable economy, viable ideas.

Webster's New World

Capable of living, developing, or germinating under favorable conditions.

Viable spores.

American Heritage Medicine

Capable of living outside the uterus. Used of a fetus or newborn.

American Heritage Medicine

Synonyms:

Antonyms:

Origin of Viable

From French, from Medieval Latin *vitabilis (“capable of life"), from Latin vita (“life"); see vital.

From Wiktionary
French from vie life from Old French from Latin vīta gwei- in Indo-European roots

From American Heritage Dictionary of the English Language, 5th Edition