iridodilator

[ĭr′ĭ-dō-dī-lātər, -dīlā′-, -dĭ-lā-, ī′rĭ-]

n.

The dilator muscle of the pupil.
An agent that causes dilation of the pupil.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.