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Meaning of nondegradable

non•de•grad•a•ble

Pronunciation: (non"di-grā'du-bul), [key]
— adj.
  1. not subject to or capable of degradation or decomposition: nondegradable waste.
—n.
  1. something that is not degradable, as a chemical compound.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.