dilater

Noun

 * 1) One who, or that which, dilates, expands, or enlarges.

Verb

 * 1)  to dilate

Etymology
Attested at least as early as 1314, borrowed from.

Verb

 * 1)  to spread
 * 2)  to spread out; to cover a larger area than before
 * "frm"
 * "frm"

- La ou la mer s'espant et se dilate