pustule

noun

pus·​tule ˈpəs-(ˌ)chül 

-(ˌ)tyül,

-(ˌ)tül

1

: a small circumscribed elevation of the skin containing pus and having an inflamed base

2

: a small often distinctively colored elevation or spot resembling a blister or pimple

Synonyms

• boil
• fester
• hickey
• papule
• pimple
• pock
• whelk
• zit [slang]

Examples of pustule in a Sentence

smallpox's characteristic pustules typically resulted in permanent scarring for survivors of the dreaded disease

Recent Examples on the Web

Its venomous sting causes pustules and allergic reactions and is capable of killing a human. —Jack Guy, CNN, 24 Mar. 2025

Victims develop high fevers, deep rashes and oozing pustules. —William J. Broad, New York Times, 12 Feb. 2025

Plants with orange rust, identified by orange pustules on the leaves, must be burned or disposed of in the trash. —Kim Toscano, Southern Living, 20 Jan. 2025

Along with his obesity amd high blood pressure, Henry suffered from painful venous leg ulcers that made his lower limbs swell, and pustules would burst. —Baz Bamigboye, Deadline, 9 Jan. 2025

Word History

Etymology

Middle English, from Latin pustula; akin to Lithuanian pusti to blow, Greek physa breath

First Known Use

14th century, in the meaning defined at sense 1

Rhymes for pustule

• ampoule
• bascule
• carpool
• cesspool
• ferrule
• footstool
• guayule
• lobule
• misrule
• preschool
• whirlpool
• boule

Kids Definition

pustule

noun

pus·​tule ˈpəs-chü(ə)l 

1

: a small elevation of the skin having an inflamed base and containing pus

2

: a small elevation resembling a pimple or blister

Medical Definition

pustule

noun

pus·​tule ˈpəs-(ˌ)chü(ə)l  -(ˌ)t(y)ü(ə)l 

1

: a small circumscribed elevation of the skin containing pus and having an inflamed base

2

: a small often distinctively colored elevation or spot resembling a blister or pimple