Definition of "imperforation" []

• The state of being without perforation. (noun)

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• "There may be imperforation or congenital occlusion of some portion of the urethra, causing enormous accumulation of urine in the bladder, but fortunately there is generally in such cases some anomalous opening of the urethra giving vent to the excretions."
• "The most typical form of malformation of the esophagus is imperforation or obliteration."
• "Bannofont reports a case of congenital imperforation of the left auditory canal existing near the tympanic membrane with total deafness in that ear."