If the net of an ordered adsorbed phase is in registry with the lattice of the
adsorbent the structure is called coherent, if not it is called incoherent.
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