Definition

A layer or foundation that supports something else, often found beneath the surface or as a base for other materials.

Example

The archaeologists discovered a substratum of ancient pottery beneath the soil.

Conversation

Have you ever thought about what lies beneath the ground we walk on?

Yeah, I guess there’s a whole substratum of earth we never see.

Exactly! It’s fascinating to think about the layers of soil and rock.

Totally! That substratum plays such a crucial role in our environment.

Synonyms & Antonyms

Root Explanation

Substratum → It is formed from "sub-" (meaning under) and "stratum" (from Latin, meaning layer or bed). The word "substratum" refers to an underlying layer or foundation beneath something else.

Memory Tip

Think of something that is 'under' ('sub-') another 'layer' ('stratum') — that's why substratum means an underlying layer.

Visually Confused Words