A two-dimensional lattice (in a particular range of
surface coverage and temperature) into which the
adsorbate is ordered, especially in some cases of
localized adsorption.
Source:
PAC, 1976, 46, 71
(Manual of Symbols and Terminology for Physicochemical Quantities and Units - Appendix
II. Definitions, Terminology and Symbols in Colloid and Surface Chemistry. Part II:
Heterogeneous Catalysis)
on page 76