1. The quality or condition of being pure: the purity of the drug.
2. Freedom from spiritual or moral defilement; innocence or chastity: "Teach your children ... the belief in purity of body, mind and soul" (Emmeline Pankhurst).
3. The degree to which a color is free from being mixed with other colors.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.