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mul·ti·coat·ed | \ ˌməl-tē-ˈkō-təd 
, -ˌtī- \
, -ˌtī- \Definition of multicoated
: having multiple coatings in order to reduce the appearance of light reflections in the lens
The Minolta-made, internal-focusing zoom lens has 15 multicoated elements and covers a focal length range from 8.5mm to 68mm.— Elinor H. Stecker High-quality eyepieces also feature fully coated lenses. … Better still are fully multicoated lenses, where the optical coatings have been applied in several microscopically thin layers.— Phil Harrington
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The first known use of multicoated was in 1971
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