Dictionary

absorption spectrum

noun

Definition of ABSORPTION SPECTRUM

:  an electromagnetic spectrum in which a decrease in intensity of radiation at specific wavelengths or ranges of wavelengths characteristic of an absorbing substance is manifested especially as a pattern of dark lines or bands
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First Known Use of ABSORPTION SPECTRUM

1869
Medical Dictionary

absorption spectrum

noun

Medical Definition of ABSORPTION SPECTRUM

:  an electromagnetic spectrum in which a decrease in intensity of radiation at specific wavelengths or ranges of wavelengths characteristic of an absorbing substance (as chlorophyll) is manifested especially as a pattern of dark lines or bands—compare emission spectrum

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