monolayer

noun Physical Chemistry.

1. molecular film.

noun

1. a single layer of atoms or molecules adsorbed on a surfaceAlso called: molecular film

n.

1. A film or layer one molecule thick formed at the interface between water and either oil or air by a substance such as a partially esterified fatty acid that contains both hydrophobic and hydrophilic groups in the same molecule.
2. A confluent sheet of cells, one cell deep, growing on a surface in a cell culture.