single-layer

the compound adjective "single-layer" is a modern english formation that transparently combines two elements of distinct origins. "single" traces back to latin singulus, meaning "one, individual," which itself may derive from a proto-indo-european root meaning "one." "layer" originates from old english leger, meaning "a bed, couch, or stratum," related to the verb "to lie." the conceptual logic is direct: "single" specifies the quantity, and "layer" specifies the object, creating a term that literally means "having one stratum." this compound efficiently describes a structure, often in technical or material contexts, composed of just one level or sheet, such as in electronics, clothing, or geology.

Structure: single (one) + layer (stratum) single (from latin singulus, meaning "one, individual"; functions as a numerical modifier) + layer (from middle english leyer, from old english leger meaning "a bed, stratum"; functions as the core noun denoting a sheet or level)