Vi"a*ble (?), a. [F., from vie life,
L. vita. See Vital.] (Law) Capable of living;
born alive and with such form and development of organs as to be capable of
living; -- said of a newborn, or a prematurely born, infant.
☞ Unless he [an infant] is born viable, he acquires no
rights, and can not transmit them to his heirs, and is considered as if he
had never been born.