[noun on-ley, awn-; verb on-ley, awn-]
- an overlay, especially one in relief.
- Dentistry. an inlay that restores the occlusal surface of a tooth.
- to place or mount (an onlay) on a surface, especially for decorative purposes.
Origin of onlay
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for onlay
It disturbs the breadth, which is so valuable a characteristic of onlay.
Couched cord or filoselle is useful in covering the raw edge of the onlay, not so much masking the joints as making them sightly.
- A cast restoration, usually made of gold, that is attached to the occlusal surface of a tooth.
- A bone graft applied to the exterior surface of the bone.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.