The American Heritage® Dictionary of the English Language, 4th Edition
n. Strict observance of or insistence on traditional correctness, especially of language: "By purism is to be understood a needless and irritating insistence on purity or correctness of speech” ( H.W. Fowler).
n. An insistence on the traditionally correct way of doing things, especially of language
n. An example of purist language etc
the GNU version of the Collaborative International Dictionary of English
n. Rigid purity; the quality of being affectedly pure or nice, especially in the choice of language; over-solicitude as to purity.
The Century Dictionary and Cyclopedia
n. The exclusion of admixture of any kind; the affectation of rigid purity, as in language, style, etc.; specifically, excessive nicety as to the choice of words.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. scrupulous or exaggerated insistence on purity or correctness (especially in language)
Word Usage
"I work out my sexual frustration by going to the utmost extreme in Icelandic purism."