fluidity

noun

flu·​id·​i·​ty flü-ˈi-də-tē 

1

: the quality or state of being fluid

2

: the physical property of a substance that enables it to flow

Examples of fluidity in a Sentence

Recent Examples on the Web

Benedict’s sexuality, his fluidity, has been something the writers have explored in building his overall arc. —Yvonne Villarreal, Los Angeles Times, 29 Jan. 2026

Held in the historic Grand Palais against the backdrop of a poetic set filled with giant pink and red mushrooms, the couture show built on the fluidity established in his debut ready-to-wear collection. —Laure Guilbault, Vogue, 27 Jan. 2026

Williams has frequently pointed out how friendly a target Loveland is, with his size, catch radius, fluidity and ability to separate. —Dan Wiederer, New York Times, 27 Jan. 2026

And so the playfulness, the fluidity, and then there was something almost feline or animal or catlike about the character in my imagination. —Scott Huver, PEOPLE, 26 Jan. 2026

Word History

First Known Use

1603, in the meaning defined at sense 1

Rhymes for fluidity

• acidity
• aridity
• avidity
• cupidity
• humidity
• liquidity
• lucidity
• morbidity
• placidity
• rancidity
• rapidity
• rigidity

Kids Definition

fluidity

noun

flu·​id·​i·​ty flü-ˈid-ət-ē 

: the quality or state of being fluid

Medical Definition

fluidity

noun

flu·​id·​i·​ty flü-ˈid-ət-ē 

plural fluidities

1

: the quality or state of being fluid

2

a

: the physical property of a substance that enables it to flow

b

: the reciprocal of viscosity