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DictionarypureUnmixed or uncontaminated
adjective

pure

PYOOR/pjʊr/

Unmixed with anything foreign or unwanted.

The pitcher and tumbler hold pure water without anything mixed into it.

Clear water in pitcher and tumbler.
Etymology
pureLatinclean, unmixed

Latin purus already combined cleanliness with being unmixed. Early English use for unalloyed gold gives a concrete example of the same idea: nothing extraneous has been mixed into the substance.

In context

Kwiat Diamonds0:43
For example, 24 karat gold is 24 of 24 parts pure gold. Pure gold is very soft, and not durable enough for use in jewelry.
The 4Cs - Carat vs Karat

More examples

  • The laboratory uses pure water for its experiments.
  • The ring is pure gold, not an alloy.
  • The new filter gives us purer air.

Forms

pure · purer · purest

purity noun — The state of being unmixed or uncontaminated.

purify verb — To remove unwanted substances from something.

Similar words

unadulterated
Emphasizes that nothing inferior or unnecessary has been added.
uncontaminated
Emphasizes freedom from harmful substances rather than all mixtures.
undiluted
Means not weakened by added water or another substance.