circular dichroism

noun

1
: the property (as of an optically active medium) of unequal absorption of right and left plane-polarized light so that the emergent light is elliptically polarized
2
: a spectroscopic technique that makes use of circular dichroism

Examples of circular dichroism in a Sentence

Recent Examples on the Web
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This effect, known as photoelectron circular dichroism (PECD), describes how electrons are emitted differently depending on whether a molecule is left- or right-handed. Neetika Walter, Interesting Engineering, 28 Aug. 2025

Word History

First Known Use

circa 1961, in the meaning defined at sense 1

Time Traveler
The first known use of circular dichroism was circa 1961

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Cite this Entry

“Circular dichroism.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/circular%20dichroism. Accessed 6 Feb. 2026.

Medical Definition

circular dichroism

noun
1
: the property (as of an optically active medium) of unequal absorption of right and left plane-polarized light so that the emergent light is elliptically polarized
2
: a spectroscopic technique that makes use of circular dichroism
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