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Definition of opacity

opacity

/oʊˈpæs.ə.ti/
o · pac · i · ty

Adverb:opaquely
•
Plural:opacities
•
Adjective:opaque
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opacity Lexical Profile

opacity Game Scores & Validity

• noun

1

The condition or quality of lacking transparency or translucency; the state of being impenetrable by light.

Example

"The artist adjusted the opacity of the digital brush layer so the background texture would faintly show through."


2

The quality of being difficult to understand, interpret, or scrutinize; obscurity of meaning or lack of openness.

Example

"Watchdog organizations criticized the financial institution for the deliberate opacity of its accounting practices."


3

An opaque spot, area, or structure, especially an abnormal nontransparent patch in the lens or cornea of the eye or on a medical radiograph.

Example

"The chest X-ray revealed small pulmonary opacities that required further clinical evaluation."

Synonyms
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Antonyms
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• Rhymes for opacity

Word Origin & Etymology

Borrowed in the late 16th century from French opacité or directly from Latin opacitas, derived from opacus meaning "shady, dark, or obscure."

Cite this Entry


Wordmom. (2026). Definition of Opacity. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/opacity
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