erasion

plural erasions

1. countableuncountableThe act of erasing; a rubbing out or obliteration; erasure.

   The erasion of symbol pixels after recognition is, correspondingly, separated into two cases.

   2006, F. Su, J. Song, S. Cai, “A Vectorization System for Architecture Engineering Drawings”, in Wenyin Liu, Josep Lladós, editor, Graphics Recognition, page 16

   2 more examples

   If erasions are found in a text occuring verbatim in another author who continues the material erased, then without a doubt that first author in the particular instance is not original.

   1949, Franciscan Studies - Volume 9, page 105

   […] followed by the low level driving energy to said heating means for effecting the erasion of the data recorded on the thermal recording media;

   1998, Yoshinori Koshida, Shusaku Tanabe, Satoshi Murakami, “5852463: Thermal Recording Apparatus and Erasing Method of a Record Therefor”, in Official Gazette of the United States Patent and Trademark Office, page 3547

2. countableuncountableThe surgical removal of tissue by scraping.

   A very considerable time must elapse before an operation can assert that a case of excision or erasion of the knee is thoroughly successful.

   1888, A. Marmaduke Shield, “Erasion of the Knee Joint”, in Annals of Surgery, volume 7, page 117

   3 more examples

   The method of erasion—scraping off the epidermis until the papillary layer of the skin is laid bare—is now most requently used in this country.

   1894, George Henry Rohe, Text-book of hygiene, page 341

   If caseation has taken place it should be treated as elsewhere, by means of incision and erasion; the skin being sutured and the wound kept aseptic when possible.

   1910, Edred Moss Corner, Operations of general practice

   Mr. Wright advocates erasion in children in preference to excision on the grounds that there is less interference with the growth of the limb, and mobility may be preserved.

   1912, Alfred Herbert Tubby, Deformities, Including Diseases of the Bones and Joints, page 305