Definition

A layer or level of material, often found in geology, biology, or social structures, that is arranged horizontally or represents a specific group of similar characteristics.

Example

The archaeologists discovered a stratum of ancient pottery beneath the surface.

Conversation

Did you know that the Earth's crust is made up of different stratum layers?

Yeah, I read that it can tell us a lot about the planet's history.

Exactly! Each stratum holds clues about what happened millions of years ago.

It's fascinating how much information is hidden beneath our feet.

Synonyms & Antonyms

Root Explanation

Stratum → It originates from Latin 'stratum' (meaning a layer or bed), which is the past participle of 'sternere' (meaning to spread out or lay down). The word 'stratum' refers to a layer or level, particularly in geological or biological contexts.

Memory Tip

Think of 'stratum' as a 'layer' that has been 'spread out' — this helps you remember that it refers to a layer or level.

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