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Meaning of peracid

per•ac•id

Pronunciation: (pur-as'id), [key]
— n. Chem.
  1. an oxyacid, the primary element of which is in its highest possible oxidation state, as perchloric acid, HClO, and permanganic acid, HMnO.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.