May 26, 2019
Learner's Word of the Day
fluid /ˈfluːwəd/ noun
fluid
/ˈfluːwəd/
noun

plural fluids

Filling up the engine fluids
Filling up the engine fluids
Learner's definition of FLUID

: a substance that is able to flow freely : a liquid substance

[count]

  • Please check the fluids in the car's engine.

  • She needs to drink plenty of fluids.

[noncount]

  • Fluid leaked from the car's engine.

  • a bottle of yellow fluid

Get Learner's Word of the Day daily email!
More Learner's Words of the Day
Subscribe