Definition of imperforate
1 : having no opening or aperture; specifically : lacking the usual or normal opening
2 of a stamp or a sheet of stamps : lacking perforations or roulettes
First Known Use of imperforate
Learn More about imperforate
Medical Dictionary: Definition of imperforate
Seen and Heard
What made you want to look up imperforate? Please tell us where you read or heard it (including the quote, if possible).