opacatev.

Brit.

/əʊˈpeɪkeɪt/, U.S.

/oʊˈpeɪˌkeɪt/

Origin: A borrowing from Latin. Etymons: Latin opācāt-, opācāre.

Etymology: < classical Latin opācāt-, past participial stem (compare -ate suffix³) of opācāre to make shady or dark < opācus opaque adj.

Now archaic.

transitive and intransitive = opacify v.

ΘΚΠ

the world > matter > light > transparency or translucence > opacity > render opaque [verb (transitive)]

opacate1660

nubilatea1697

opaque1718

opacify1940

1660 R. Boyle New Exper. Physico-mechanicall xxxvii. 308 A whiteness which did..opacate (as some speak) the inside of the Glass.

1854 E. C. Evans tr. T. J. Pelouze & E. Frémy Gen. Notions of Chem. 200 To opacate with stannic acid, this acid is produced, together with the oxide of lead, by heating in the air a mixture of 15 parts of tin, and 100 parts lead.

1890 H. Frederic Lawton Girl 20 Eyes..dimmed and opacated by the effects of dissipation.

1993 C. Ricks Beckett's Dying Words iii. 126 The English language has long permitted us (though not encouraged us) to opacate and, less anciently, to opacify.

This entry has been updated (OED Third Edition, June 2004; most recently modified version published online March 2022).

单词	opacate
释义	opacatev. Brit. /əʊˈpeɪkeɪt/, U.S. /oʊˈpeɪˌkeɪt/ Origin: A borrowing from Latin. Etymons: Latin opācāt-, opācāre. Etymology: < classical Latin opācāt-, past participial stem (compare -ate suffix³) of opācāre to make shady or dark < opācus opaque adj. Now archaic. transitive and intransitive = opacify v. ΘΚΠ the world > matter > light > transparency or translucence > opacity > render opaque [verb (transitive)] opacate1660 nubilatea1697 opaque1718 opacify1940 1660 R. Boyle New Exper. Physico-mechanicall xxxvii. 308 A whiteness which did..opacate (as some speak) the inside of the Glass. 1854 E. C. Evans tr. T. J. Pelouze & E. Frémy Gen. Notions of Chem. 200 To opacate with stannic acid, this acid is produced, together with the oxide of lead, by heating in the air a mixture of 15 parts of tin, and 100 parts lead. 1890 H. Frederic Lawton Girl 20 Eyes..dimmed and opacated by the effects of dissipation. 1993 C. Ricks Beckett's Dying Words iii. 126 The English language has long permitted us (though not encouraged us) to opacate and, less anciently, to opacify. This entry has been updated (OED Third Edition, June 2004; most recently modified version published online March 2022). < v.1660
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