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

In a recent lab demonstration done by the Hong Kong University of Science and Technology (HKUST), the compact humanoid moved with surprising fluidity—dribbling, passing, and sinking shots after practising thousands of simulated drills. —Jijo Malayil, Interesting Engineering, 25 Nov. 2025

The fluidity of Rihanna’s look was matched by the singer’s maxiskirt, which continued the black tonal motif of her attire. —Julia Teti, Footwear News, 21 Nov. 2025

Patriarchy reverses into feminism, and feminism reverses into gender fluidity. —Big Think, 16 Nov. 2025

According to multiple scouts, the Clippers' profound lack of speed and fluidity is their biggest problem, and their other issues seem to flow from that deficiency. —Robert Marvi, MSNBC Newsweek, 15 Nov. 2025

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