"substratum" in the noun 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"

2. substrate, substratum

any stratum or layer lying underneath another

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"

Source: WordNet® (An amazing lexical database of English)

Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.

View WordNet® License