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pure 'pyu̇(ə)r adj, pur·er; pur·est
1) unmixed with any other matter <\pure gold>
2) free from dust, dirt, or taint <\pure food>
3 a) of unmixed ancestry: PUREBRED
b) homozygous in and breeding true for one or more characters
pure·ness n
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(pūr) [L. purus] free from mixture with or contamination by other materials; a reagent is chemically pure when it contains no other chemicals that might interfere with its action.Medical dictionary. 2011.