Wiktionary
n. 1 (context chemistry English) A layer of material that is one molecule thick 2 (context biology English) A layer of tissue that is one cell thick
Wikipedia
A monolayer is a single, closely packed layer of atoms, molecules, or cells. In some cases it is referred to as a self-assembled monolayer. Monolayers of layered crystals like graphene and molybdenum disulfide are generally called 2D materials.
Usage examples of "monolayer".
You had plans for a monolayer membrane to cap your work, resting atop the whole atmosphere, the largest balloon ever conceived.
She looked beyond him and saw the two arm wings Andy had brought from Earth the year before, bright blue monolayer on a carbon strut.
Thanks to the atmosphere of five-percent CO and air, a monolayer is already starting to form.
There were forms of single-celled organism down there, I knew-staining the surface in great, lustrous purple and emerald monolayers or veining deep rock strata-but they existed in such glacial time that it was hard to think of them as living at all.