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单词 halation
释义

WordReference Random House Unabridged Dictionary of American English © 2024
ha•la•tion  (hā lāshən, ha-),USA pronunciation n. [Photog.]
  1. Photographya blurred effect around the edges of highlight areas in a photographic image caused by reflection and scattering of light through the emulsion from the back surface of the film support or plate.
  • hal(o) + -ation 1855–60

Collins Concise English Dictionary © HarperCollins Publishers::
halation /həˈleɪʃən/ n
  1. fogging usually seen as a bright ring surrounding a source of light: caused by reflection from the back of the film
Etymology: 19th Century: from halo + -ation
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