Definition

A small raised bump on the skin that is filled with pus, often caused by infection or irritation.

Example

The doctor examined the pustule on my arm to determine the cause of the infection.

Conversation

Have you seen that weird pustule on my arm?

Yeah, I noticed it earlier! What happened?

I think it might be a bug bite; it started swelling up.

You should probably get it checked, just to be safe.

Synonyms & Antonyms

Root Explanation

Pustule → It is formed from "pustula" (from Latin, meaning blister or pimple) and the diminutive suffix "-ule" (meaning small). The word "pustule" refers to a small blister or pimple filled with pus.

Memory Tip

Think of a small 'blister' ('pustula') when you hear 'pustule' — it helps you remember that a pustule is a small, pus-filled bump.

Visually Confused Words