Definition

A hair or hair-like structure found on the surface of a cell or microorganism.

Example

The bacterium was covered in tiny pili that helped it attach to surfaces.

Conversation

Did you know that some bacteria have a structure called a pilus?

Really? I had no idea! What does it do?

It helps them attach to surfaces, which is pretty fascinating.

Wow, nature is so interesting with all its tiny details!

Synonyms & Antonyms

Root Explanation

Pilus is derived from Latin 'pilus' (meaning hair). The word refers specifically to a single hair or filament.

Memory Tip

Think of the Latin word for hair, 'pilus', to remember that this word refers to a single hair or filament.

Visually Confused Words