English Explanatory Dictionary

opacity

English dictionary entry

Meanings

noun
  1. The state or quality of being opaque, not allowing light to pass through.
  2. The state or quality of being inaccessible to understanding.
  3. A measure of relative impenetrability to electromagnetic radiation such as light.
  4. An opaque area.

Pronunciation

ōpăsʹĭti /oʊˈpæsɪti/ LL-Q1860 (eng)-Vininn126-opacity.wav

Word forms

opacity opacities

Etymology

From opaque + -ity, from French opacité, from Latin opacitas.

Synonyms

nontransparency opaqueness

Derived words

nonopacity radioopacity radiopacity referential opacity semiopacity snowball opacity subopacity
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