superoxide

[soo-per-ok-sahyd, -sid]

Origin of superoxide

First recorded in 1840–50; super- + oxide
Also called hyperoxide.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for superoxide

superoxide

noun
  1. any of certain metal oxides that contain the O 2 ionpotassium superoxide, KO 2
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

superoxide in Medicine

superoxide

[sōō′pər-ŏksīd′]
n.
  1. A compound containing a univalent anionic oxygen molecule or the univalent anion itself.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.