|first or highest in rank, importance or value|
|1.||capable of becoming actual, useful, etc; practicable: a viable proposition|
|2.||(of seeds, eggs, etc) capable of normal growth and development|
|3.||(of a fetus) having reached a stage of development at which further development can occur independently of the mother|
|[C19: from French, from vie life, from Latin vīta]|
viable vi·a·ble (vī'ə-bəl)
Capable of living, developing, or germinating under favorable conditions.
Capable of living outside the uterus. Used of a fetus or newborn.