Definition of fluid in English:


Line breaks: fluid
Pronunciation: /ˈfluːɪd


  • A substance that has no fixed shape and yields easily to external pressure; a gas or (especially) a liquid: body fluids [mass noun]: a bottle of cleaning fluid
    More example sentences
    • Gold can form soluble compounds with these substances and so the fluids will leach it out of rocks.
    • The bakery owners later gave up their lease after it emerged that the liquid had in fact been body fluids from the two men.
    • I was on a drip because obviously I had no fluids in my body, the only liquid was alcohol.
    flowing substance; liquid, watery substance, moisture, solution, juice, sap; gas, gaseous substance, vapour


Back to top  
  • 2(Of a clutch or coupling) using a liquid to transmit power.
    More example sentences
    • Broadly, fluid couplings are of two types - constant and variable speed.



Pronunciation: /-ˈɪdɪti/
More example sentences
  • The grace of their elongated shape and irregular profiles reflect the fluidity and unpredictable nature of the glass medium.
  • Their athleticism and fluidity of movement was wonderfully impressive.
  • To watch and feel Apollo is to see how shape and fluidity, pose and movement, interdepend.


More example sentences
  • The song was slow and smooth and Simba danced fluidly yet unpredictably.
  • When filming, you had to creep smoothly, fluidly along so that the camera detected no bobbing motion.
  • But not everyone would be able to slide from bottom-space to performance mode as fluidly as Jae does.


late Middle English (as an adjective): from French fluide or Latin fluidus, from fluere 'to flow'.

More definitions of fluid

Definition of fluid in:

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day coloratura
Pronunciation: ˌkələrəˈto͝orə
elaborate ornamentation of a vocal melody