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superoxide dismutase

American  
[soo-per-ahks-ahyd dis-myoo-tayz] / ˌsu pərˌɑks aɪd ˈdɪs myʊˌteɪz /

noun

plural

superoxide dismutases

  1. Biology. an enzyme that protects cells from damage during metabolism by catalyzing the dismutation, or simultaneous oxidation and reduction, of harmful superoxide into oxygen and hydrogen peroxide.

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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.