Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun substratum

3 senses of substratum

Sense 1
substrate, substratum -- (a surface on which an organism grows or is attached; "the gardener talked about the proper substrate for acid-loving plants")
       => surface -- (the extended two-dimensional outer boundary of a three-dimensional object; "they skimmed over the surface of the water"; "a brush small enough to clean every dental surface"; "the sun has no distinct surface")

Sense 2
substrate, substratum -- (any stratum or layer lying underneath another)
       => stratum -- (one of several parallel layers of material arranged one on top of another (such as a layer of tissue or cells in an organism or a layer of sedimentary rock))

Sense 3
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")
       => indigenous language -- (a language that originated in a specified place and was not brought to that place from elsewhere)