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TOEFL® Vocabulary Practice

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definition: 
(Of a plant, animal, or cell) capable of surviving or living successfully, especially under particular environmental conditions:
sentence: 
In addition, their long shelf life eventually might translate into a reduced number of viable cells. The company says the rationalisation is necessary in order to secure the firm's viability.
difficulty: 
medium
toefl frequency: 
1
toefl classification: