monomolecular

Of or relating to a single molecule.

Of or consisting of a layer one molecule thick.

Consisting of or involving a single molecule: in chem., of a substance, having its simplest molecular composition in contradistinction from polymeric derivatives formed by the union of two, three, or more of the simplest molecules. Thus, formic aldehyde (CH₂O) may be spoken of as monomolecular, and metaformaldehyde (C₃H₆O₃) as its trimolecular derivative, 3CH₂O.

involving a single molecule

consisting of a single layer of molecules