1) Having no opening 2) Having no perforation 3) Not perforate 4) Not perforated 5) Uncut 
• (a.) Alt. of Imperforated
Synonym for atretic ... <embryology> Having an abnormal closure or absence of a body opening or tubular organ (for example, a child born without an oesophagus would have an atretic birthdefect). ... (09 Oct 1997) ... 
(im-pur´fә-rāt) not open; abnormally closed.
Type: Term Pronunciation: im-per′fō-rāt Synonyms: atretic
separated by a septum (nostrils)
[adj] - not perforated
imperforate 1. Not perforated or having no opening. 2. Not separated by rows of perforations; such as, imperforate sheets of stamps. 3. In medicine, a body part lacking an opening of the normal size; especially, because of atypical development; for example, an imperforate anus.
adjective not perforated; having no opening
not perforate; having no perforation. · (of a number of stamps joined together) lacking the perforations usually separating individual stamps.