Topic: CHEMISTRY
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de‧grade

1 [transitive] to treat someone without respect and make them lose respect for themselves :
a movie that degrades women
a movie that degrades women2 [transitive] to make a situation or the condition of something worse :
The dolphin's habitat is being rapidly degraded.
The dolphin's habitat is being rapidly degraded.3 [intransitive and transitive]HC technical if a substance, chemical etc degrades, or if something degrades it, it changes to a simpler form
—degradable adjective