etching

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etching

 [ech´ing]
the cutting of a hard surface such as metal or glass by a corrosive chemical, usually an acid, in order to create a design.
acid etching etching of dental enamel with an acid in order to roughen the surface, increase retention of resin sealant, and promote mechanical retention.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
References in periodicals archive ?
Engraving is a different medium from relief etching, and the procedures for making changes are different, but Blake's basic way of working seems to have been comparable, as Essick and Viscomi have argued.
Wollstonecraft, Mary, a Fiction; Blake begins experimenting with relief etching; Burns marries
It was not unusual for Blake to work in different media and different styles during the same period, but I think the Jerusalem white-line and "woodcut-on-pewter" designs, which appear almost primitive in their directness and lack of fine detail--and so perfectly realized in two-dimensional black and white--represent where he would have gone in relief etching. You see this very expressive manner, in which the marks of the tools in the act of making the image are plainly visible, in the Virgil wood engravings and the last relief etchings, On Homers Poetry [and] On Virgil and The Ghost of Abel.