noun the substance that is acted upon by an enzyme or ferment.
noun a surface on which an organism grows or is attached.
— synonyms: substratum
noun any stratum or layer lying underneath another.
— synonyms: substratum
noun an indigenous language that contributes features to the language of an invading people who impose their language on the indigenous population.
— synonyms: substratum
Examples
“The rock surface of a rockpool is the substrate for a sessile organism such as a limpet.”