SkyfireDict

substratum   (TTS Sound)

The noun substratum has 3 senses

• substrate, substratum -- (a surface on which an organism grows or is attached; "the gardener talked about the proper substrate for acid-loving plants")


• substrate, substratum -- (any stratum or layer lying underneath another)


• substrate, substratum -- (an indigenous language that contributes features to the language of an invading people who impose their language on the indigenous population; "the Celtic languages of Britain are a substrate for English")