The Collaborative International Dictionary
Imperforate
Imperforate \Im*per"fo*rate\, Imperforated \Im*per"fo*ra"ted\,
a. [L. pref. im- not + perforatus, p. p. of perforate to
perforate. See Perforate.]
Not perforated; having no opening or aperture.
--Sir J.
Banks.
Douglas Harper's Etymology Dictionary
Wiktionary
imperforate
a. Not perforated. n. (context philately English) A postage stamp that has not been perforated.
WordNet
imperforate
adj. not perforated; having no opening
Wikipedia
Usage examples of "imperforate".
Verdile records an instance of imperforate vagina in which rectovaginal wall was divided and the delivery effected through the rectum and anus.
Tweedie saw an Irish girl of twenty-three, with an imperforate os uteri, who had menstruated only scantily since fourteen and not since her marriage.