[ non-vahy-uh-buh l ]
/ nɒnˈvaɪ ə bəl /


not capable of living, growing, and developing, as an embryo, seed, or plant.
not practicable or workable: a nonviable plan.

Origin of nonviable

First recorded in 1875–80; non- + viable

Related forms

non·vi·a·bil·i·ty, noun

Definition for non-viability (2 of 2)


[ vahy-uh-bil-i-tee ]
/ ˌvaɪ əˈbɪl ɪ ti /


ability to live, especially under certain conditions: The viability of a fetus outside the womb has increased dramatically with the advent of new technologies and procedures.
the capacity to operate or be sustained: The viability of the company was guaranteed by the success of its new product.

Related forms

non·vi·a·bil·i·ty, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Medicine definitions for non-viability


[ nŏn-vīə-bəl ]


Not capable of living or developing independently. Used especially of an embryo or fetus.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.