Definition of "penile" [penile]

• Of or relating to the penis. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Furthermore, their ratings of erection and arousal to homosexual stimuli were low and not significantly different from nonhomophobic men who demonstrated no significant increase in penile response to homosexual stimuli."
• "The men were exposed to sexually explicit erotic stimuli consisting of heterosexual, male homosexual, and lesbian videotapes, and changes in penile circumference were monitored."
• "Both groups exhibited increases in penile circumference to the heterosexual and female homosexual videos."