opacity - Wiktionary, the free dictionary (original) (raw)

• Beginning
• 1 English
  • 1.1 Etymology
  • 1.2 Pronunciation
  • 1.3 Noun
    * 1.3.1 Synonyms
    * 1.3.2 Coordinate terms
    * 1.3.3 Derived terms
    * 1.3.4 Translations

From Wiktionary, the free dictionary

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

• (US) enPR: ōpăsʹĭti, IPA(key): /oʊˈpæsɪti/

opacity (countable and uncountable, plural opacities)

1. (uncountable) The state or quality of being opaque, not allowing light to pass through
   We could not see the sandbar due to the opacity of the muddy water.
2. (uncountable) The state or quality of being inaccessible to understanding.
   The opacity of these decisions is troubling.
3. (optics, countable) A measure of relative impenetrability to electromagnetic radiation such as light.
   The opacity of a clean glass window is near zero.

• opaqueness

• transparency

• referential opacity

state of being opaque; blocking light

measure of relative opaqueness

Categories:

• English terms suffixed with -ity
• English terms derived from French
• English terms derived from Latin
• English 4-syllable words
• English terms with IPA pronunciation
• English terms with audio pronunciation
• English lemmas
• English nouns
• English uncountable nouns
• English countable nouns
• English terms with usage examples
• en:Optics