Relating to the autonomic nerve fibers that supply the smooth muscle of the iris. SYN: iridomotor. [pupillo- + L. motor, mover]
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pu·pil·lo·mo·tor .pyü-pə-lō-'mōt-ər adj having a motor influence on or involving alteration of the pupil of the eye <\pupillomotor nerve fibers> <a \pupillomotor reflex>
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pu·pil·lo·mo·tor (pu″pĭ-lo-moґtər) pertaining to the movement of the pupil.Medical dictionary. 2011.