Become Larger or Wider Like the Pupils in the Eyes

This page is the CodyCross answer for the clue below from Australia, Group 1017, Puzzle 1 (Kangaroo Island).

Question is: Become Larger or Wider Like the Pupils in the Eyes

and the answer is: DILATE

Word Meaning:

DILATE — (transitive) To enlarge; to make bigger.

Definitions from Wiktionary.