Under the microscope, the biologist observed motile bacteria swimming toward the nutrient source.

As a motile, she often rehearsed words internally and felt the faint muscular sensations of speaking before she actually spoke.

Microscopists observed that the motiles clustered near the nutrient source.

Researchers compared the motilities of several bacterial strains under different environmental conditions.

The motility of the cultured cells increased after treatment with the growth factor.