opaquen

From opaque +‎ -en.

• (UK) IPA^(key): /əʊˈpeɪkən/
• (US) IPA^(key): /oʊˈpeɪkən/

opaquen (third-person singular simple present opaquens, present participle opaquening, simple past and past participle opaquened)

1. (transitive, intransitive, rare) To make or become opaque.

   Synonym: opacify

   • 1877, The Lancet, volume 2, page 448:

     It consists of a circular disc of vulcanite, about three inches in diameter, around the margin of which there are ten pieces of opaquened glass, the opacities being graduated from No. 1, which is mere cloudiness, to perfect opacity, only admitting distinction between light and dark.

   • 1976, Journal of the Tennessee Academy of Science:

     The next largest demand is for delustering and opaquening in the paper industry.

   • 1997, David Ira Cleary, Old Immortality, page 189:

     As the evolving shrift opaquens the workspace, I consider the duplicate.

   • 2013, Koen H. A. Janssens, Modern Methods for Analysing Archaeological and Historical Glass:

     (2004) Raman and scanning electron microscopy and energy-dispersive x-ray techniques for the characterization of colouring and opaquening agents in Roman mosaic glass tesserae.

• opaquener

opaquen

1. inflection of opacar:
   1. third-person plural present subjunctive
   2. third-person plural imperative