Definition

A thin layer of microorganisms, like bacteria, that stick to surfaces and are protected by a sticky substance they produce.

Example

The biofilm on the rocks in the river was made up of various types of bacteria.

Conversation

Have you ever heard of a biofilm?

Yeah, I think it's like a layer of bacteria on surfaces, right?

Exactly! It's interesting how they form and stick together.

Totally! I read they can even be protective for certain microorganisms.

Synonyms & Antonyms

Root Explanation

Biofilm → It is formed from "bio-" (from Greek "bios", meaning life) and "film" (from Old English "filme", meaning a thin layer or membrane). The word "biofilm" refers to a thin layer of living organisms, typically bacteria, that adhere to surfaces.

Memory Tip

Think of 'life' ('bio-') forming a 'thin layer' ('film') — that's what a biofilm is, a layer of living organisms.

Visually Confused Words