acid etching

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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.

acid etching

The application of a weak acid—e.g., 30% phosphoric acid—to the surface of enamel to roughen the surface of a tooth before bonding a resin or veneer; acid etching increases mechanical retention, cleans the enamel and improves the wetting of resins. See Cosmetic dentistry.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

ac·id etch·ing

(asid eching)
Treatment of tooth surfaces with phosphoric acid solution to roughen tooth structure microscopically to create retention, usually for resin-type restorations.
Medical Dictionary for the Dental Professions © Farlex 2012