na|ta|to|ri|al

na|ta|to|ri|al «_NAY tuh TR ee uhl, -TOHR-», adjective.

1. having to do with swimming: »

the natatorial powers of a champion swimmer.

2. adapted for swimming: »

Fins and flippers are natatorial organs.

3. characterized by swimming: »

Fishes are natatorial animals.

╂[< Late Latin natātōriālis < natātōria, or -ium bath, natatorium]