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Children's Dictionary



flu ihd
parts of speech:
noun, adjective
Language Note, Word Explorer, Word Parts
part of speech: noun
definition: a liquid or gas. A fluid flows easily and takes the shape of the container that holds it. Water and air are fluids.
When its temperature rises above thirty-two degrees Fahrenheit, water becomes a fluid.The doctor told her to rest and drink fluids.
similar words:
gas, liquid, water
part of speech: adjective
definition: capable of flowing; like a fluid.
Water remains fluid at room temperature.
similar words:
gaseous, liquid, watery
derivations: fluidly (adv.), fluidity (n.), fluidness (n.)
Language Note
Liquid and fluid are close in meaning, but they are not synonyms. Both words refer to a state of matter. A liquid is matter in a form that flows easily and is neither a solid nor a gas.
Milk and blood are liquids. Mercury is the only metal that is a liquid at room temperature.
A fluid is matter in a form that flows easily and is not a solid.
Water and air are fluids.
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