imperforate /im-pûrˈfə-rət/ or imperforated /-rā-tid/

1. Not pierced through or perforated
2. Having no opening
3. Lacking an opening, esp as a result of abnormal development, as in imperforate anus (medicine)
4. Without perforations as a means of separation, as a sheet of postage stamps

imperˈforable adjective

imperforāˈtion noun

• ISDN
• -ise
• Isegrim
• isenergic
• Isengrim
• isentropic
• -ish
• ish
• ishes
• Ishmael
• Ishmaelite
• Ishmaelitish
• I should be so lucky
• I should cocoa
• I should worry
• Ishtar
• Isiac
• Isiacal
• Isidorian
• isinglass
• isinglasses
• ISIS
• Isis
• Isl.
• Islam