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English definition of “viability”

viability

noun [U]     /ˌvaɪ.əˈbɪl.ɪ.ti/ US  /-ə.t̬i/
ability to work as intended or to succeed: Rising costs are threatening the viability of many businesses.Useful or advantageous specialized biology ability to continue to exist or develop as a living being: As the world population of Hawaiian geese has shrunk to very small numbers, the bird's continuing viability is in doubt.Existing and being
(Definition of viability noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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