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attenuated total reflectance

attenuated total reflectance [SPECT] A method of spectrophotometric analysis based
on the reflection of energy at the interface of two media which have different refractive
indices and are in optical contact with each other. Abbreviated ATR. Also known
as frustrated internal reflectance; internal reflectance spectroscopy. { ə ten yə wa¯d
əd to¯ d əl ri flek təns }