substratum
🇺🇸
/ˈsʌbstreɪtəm/
🇬🇧
/ˈsʌbstrɑːtəm/
noun
R
a layer under another layer, usually used to talk about earth or rock
The workers discovered an ancient substratum of stone while digging.
translation
a layer under another layer, usually used to talk about earth or rock
Word Forms
Plural
substrata