noun Linguistics.

the variety of language in a creole continuum that approximates most closely the standard variety of a major international language, as the English spoken in Guyana or Jamaica.

Compare basilect, mesolect.

Origin of acrolect

First recorded in 1960–65; acro- + (dia)lect
Related formsac·ro·lec·tal, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019