VIG'OR, n. [L. from vigeo, to be brisk, to grow, to be strong; allied to vivo, vixi, to live.]

1. Active strength or force of body in animals; physical force.

The vigor of this arm was never vain.

2. Strength of mind; intellectual force; energy. We say, a man possesses vigor of mind or intellect.

3. Strength or force in vegetable motion; as, a plant grows with vigor.

4. Strength; energy; efficacy.

In the fruitful earth his beams, unactive else, their vigor find.

VIG'OR, v.t. To invigorate. [not in use.]