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opacify

[oh-pas-uh-fahy]
verb (used with object), o·pac·i·fied, o·pac·i·fy·ing.
  1. to cause to become opaque.
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verb (used without object), o·pac·i·fied, o·pac·i·fy·ing.
  1. to become opaque.
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Origin of opacify

1910–15; < Latin opāc(us) shaded + -ify
Related formso·pac·i·fi·ca·tion, nouno·pac·i·fi·er, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018