opacate

O1P3A1C3A1T1E1
/ˈəʊpəkeɪt/

verb

To darken; to cloud.

OriginLatin opācātus →
First used 1660Scrabble 11
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Meanings

verbopacate (third-person singular simple present opacates, present participle opacating, simple past and past participle opacated)

present singular third person opacates · participle present opacating · participle past opacated · past opacated

  1. archaicTo darken; to cloud.First known use 1660

    […] when the same corpuscles, upon the unstopping of the glass, were put into a new motion, and disposed after a new manner, they did opacate that part of the air they moved in.

    1659 December 30 (date written), Robert Boyle, New Experiments Physico-Mechanicall, Touching the Spring of the Air, and Its Effects […], Oxford, Oxfordshire: […] H[enry] Hall, printer to the University, for Tho[mas] Robinson, published 1660, →OCLC

Origin

  1. Latinopācātus
  2. Englishopacate

Borrowed from Latin opācātus, perfect passive participle of opācō, see -ate (verb-forming suffix), from opācus (“dark”).

More words from Latin

Full word history & related roots →
Cite this entry
APA

opacate. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/opacate

MLA

“opacate.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/opacate. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “opacate,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/opacate.

Source: opacate on Wiktionary, CC BY-SA 4.0.