The Collaborative International Dictionary
Imperforated
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.
Wiktionary
imperforated
a. Not perforated; having no opening or aperture; imperforate.