Overlayer

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A layer of adatoms adsorbed onto a surface, as onto the surface of a single crystal.
  2. 2
    protective covering consisting, for example, of a layer of boards applied to the studs and joists of a building to strengthen it and serve as a foundation for a weatherproof exterior wordnet

Etymology

From over- + layer.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.