Part of speech: Noun
an indigenous language that contributes features to the language of an invading people who impose their language on the indigenous population
Example: the Celtic languages of Britain are a substrate for English
Part of speech: Noun
any stratum or layer lying underneath another
Part of speech: Noun
a surface on which an organism grows or is attached
Example: the gardener talked about the proper substrate for acid-loving plants
The word "substratum" comes from Latin substrātus, which was borrowed from New Latin substratum.
Legal and medical professions still use Latin phrases because of its precision and historical authority.