- capable of living.
- physically fitted to live.
- (of a fetus) having reached such a stage of development as to be capable of living, under normal conditions, outside the uterus.
- Botany. able to live and grow.
- vivid; real; stimulating, as to the intellect, imagination, or senses: a period of history that few teachers can make viable for students.
- practicable; workable: a viable alternative.
- having the ability to grow, expand, develop, etc.: a new and viable country.
Origin of viable
1820–30; < French, equivalent to vie life (< Latin vīta) + -able -able
SynonymsSee more synonyms for viable on Thesaurus.com
5. practical, feasible, usable, adaptable.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for unviable
By foetus immaturus here he means an unviable foetus, as is evident from the context.Essays In Pastoral Medicine
May the physician call in a physician who, he knows, will not scruple to perform the therapeutic abortion on an unviable fetus?The Ethics of Medical Homicide and Mutilation
- not capable of succeeding, esp financiallythe pit had proved economically unviable
- capable of becoming actual, useful, etc; practicablea viable proposition
- (of seeds, eggs, etc) capable of normal growth and development
- (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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for unviable
Online Etymology Dictionary, © 2010 Douglas Harper
- Capable of living, developing, or germinating under favorable conditions.
- Capable of living outside the uterus. Used of a fetus or newborn.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.