To take away a natural characteristic or inherent property of (a thing or a person).
To combine fissile material with nonfissile material in order to prevent its use in an atomic weapon.
To alter its original form or state, especially of a protein, by heat, acidity etc.
To add something to (alcohol) that makes it unsuitable for consumption but leaves it suitable for most other purposes.
To improve in accuracy, delicacy, or excellence.
To become pure; to be cleared of impure matter.
To purify of coarseness, vulgarity, inelegance, etc.; to polish.
To make nice or subtle.
To purify; reduce to a fine, unmixed, or pure state; to free from impurities.