The two general types of coral known as imperforate and perforate.    From Wordnik.com.  [CreationWiki - Recent changes [en]] Reference

In others, the stricture is rendered wholly imperforate, and the canal either contracted or nearly obliterated anteriorly through disuse.    From Wordnik.com.  [Surgical Anatomy] Reference

Gastrostomy is required in the imperforate cases.    From Wordnik.com.  [Bronchoscopy and Esophagoscopy A Manual of Peroral Endoscopy and Laryngeal Surgery] Reference

Canada in an imperforate condition, and that the Post Office.    From Wordnik.com.  [The Stamps of Canada] Reference

The imperforate stamps were first mentioned in the WEEKLY for.    From Wordnik.com.  [The Stamps of Canada] Reference

Unused imperforate copies exist of all values in the following shades.    From Wordnik.com.  [Gambia] Reference

All three values of this first set were issued imperforate and while the.    From Wordnik.com.  [The Stamps of Canada] Reference

Mr. Horsley in regard to the various imperforate copies of the issues of.    From Wordnik.com.  [The Stamps of Canada] Reference

The perforation is the usual 12 and specimens are known entirely imperforate.    From Wordnik.com.  [The Stamps of Canada] Reference

The imperforate 20c is on the normal shade but the 50c is, as Mr. Howes observes, in a.    From Wordnik.com.  [The Stamps of Canada] Reference

These labels were normally perforated 12 but they are also known entirely imperforate.    From Wordnik.com.  [The Stamps of Canada] Reference

Scott's catalogue records the 1/2c as existing in a horizontal pair imperforate between.    From Wordnik.com.  [The Stamps of Canada] Reference

Mr. Howes states that the stamp, with all three colors for the sea, is known imperforate.    From Wordnik.com.  [The Stamps of Canada] Reference

The imperforate postage stamp errors steven k is few with windows vista, 2003, xp and 2000.    From Wordnik.com.  [Wii-volution]

The stamp is nearly square, and the specimens possessed by our correspondent are imperforate.    From Wordnik.com.  [Gambia] Reference

Of this issue, which comprises the same two values -- 4d. brown and 6d. blue, imperforate -- we.    From Wordnik.com.  [manybooks.net] Reference

These were first issued in November, 1912, perf. 8 vertically and imperforate at top and bottom.    From Wordnik.com.  [The Stamps of Canada] Reference

Co., and issued in 1857-9, are esteemed as great rarities in an imperforate and unused condition.    From Wordnik.com.  [Stamp Collecting as a Pastime] Reference

On the early imperforate stamps we find a similar postmark in black, but lettered "Gambia" above and "Unpaid" below.    From Wordnik.com.  [Gambia] Reference

Registration sheets, often imperforate, exist as the very first prints taken from the printing plate for each stamp in sheet form.    From Wordnik.com.  [Museum Blogs] Reference

The cool imperforate postage stamp errors steven k is of those mishaps that approriate updated on some good popular aspect like windows.    From Wordnik.com.  [Wii-volution]