Definitions
1.NounAlternative spelling of macro language (“system for defining and processing macros”).
2.NounA "language" by common usage, which is in fact a dialect continuum consisting of widely varying varieties that may be distinct languages by the criterion of mutual intelligibility.
3.NounA group of mutually intelligible speech varieties that have no traditional name in common, and which may be considered distinct languages by their speakers.
4.NounA book-keeping device where – when a language as defined under the ISO 639-2 standard developed by the US Library of Congress, for the purpose of encoding the languages that published books are written in, does not correspond to a single language under the ISO 639-3 standard developed by the Summer Institute of Linguistics, for the purpose of listing all the world's languages in their publication Ethnologue – the ISO 639-2 language is assigned an ISO 639-3 code as a "macrolanguage".