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

But don’t be fooled by the fluidity, the tablet itself isn’t paper (or even E Ink). — Kelsey Fogarty, PC Magazine, 30 Sep. 2026

The latest addition to her oeuvre, The Phoebe Variations, is a wildly original story of complicated and unlikely family arrangements, the fluidity of identity, and just about every kind of love imaginable. — Gabrielle Bellot, Literary Hub, 30 Sep. 2026

Flashes of colors disrupted the usual neutral palette, touches of pink, yellow, and purple, which brought softness and fluidity. — Samantha Conti, Footwear News, 28 Sep. 2026

Freedom and fluidity create ambiguities that the historical record cannot always resolve. — Colleen Dulle, Harpers Magazine, 22 Sep. 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