Viable (adjective)

1. Capable of living and developing successfully.
2. Capable of working successfully.
3. Capable of being done or achieved.

Origin:

Early 17th century (in the sense "capable of living"): from latin vita life + -able.

Examples:

1. The embryo was declared viable after several tests.
2. The new technology is economically viable.
3. A solution to the problem is not yet viable.
4. The plan for the new company is not viable.
5. The flowers need viable soil to grow.