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

The spirited ensemble — most of whom sing and take small roles as well as dancing divinely — bring the fluidity and context that is usually provided by a live onstage band. —Christopher Arnott, Hartford Courant, 3 May 2026

Experts say this fluidity could fuel the industry’s aim to expand beyond borders and neat categorization. —Jessie Yeung, CNN Money, 2 May 2026

Beyond the spa, the resort continues to embrace a sense of fluidity in its offerings. —Miami Herald, 1 May 2026

That level of fluidity points to improvements in real-time control, balance correction and motion planning. —Kurt Knutsson, FOXNews.com, 1 May 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