i Register
In some senses, onlay is marked as literary. Watch for register when choosing this word.
verb
To lay or place something on a surface.
noun
A material placed such that it overlaps another.
Umbilical hernias in many centers are best managed with the use of polypropylene mesh placed in the onlay position or Ventralex-type mesh (Bard Davol) placed intraperitoneally in patients under local anesthesia in a day-surgery setting.
A restoration that covers one or more cusps of a tooth.