Definition

A structure made of two layers of molecules, often found in membranes or films.

Example

The cell membrane is composed of a phospholipid bilayer that protects the cell.

Conversation

Have you ever learned about the bilayer in cell membranes?

Yeah, it’s fascinating how it protects the cell's interior.

I find it interesting that the bilayer is made of phospholipids.

Exactly! Those layers play such a crucial role in how cells function.

Synonyms & Antonyms

Root Explanation

Bilayer → It is formed from "bi-" (meaning two) and "layer" (from Old English "leahter", meaning a covering or coating). The word "bilayer" refers to a structure consisting of two layers stacked together.

Memory Tip

Think of 'two' ('bi-') layers stacked on top of each other — that's what a bilayer is.

Visually Confused Words