per-
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per-
[pər or per] (chemistry)
Prefix meaning:
Complete, as in hydrogen peroxide.
Extreme, or the presence of the peroxy (‒O‒O‒) group.
Exhaustive (complete) substitution, as in perchloroethylene.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.