While searching for the word "nondegradable" on the web and through www.oed.com, I happened to discover the "old" OED's sibling, Oxforddictionaries.com. It seems to search words like a charm and you can hear the audio clips (pronunciation examples) in a blink of an eye. Try it!
http://www.oxforddictionaries.com/
More information about the site and its philosophy:
http://www.oxforddictionaries.com/words/about
