SINCE 1828

An Encyclopædia Britannica Company

circular dichroism

noun

Definition of circular dichroism

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

First Known Use of circular dichroism

circa 1961

Medical Dictionary

circular dichroism

noun

medical Definition of circular dichroism

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

Seen and Heard

What made you want to look up circular dichroism? Please tell us where you read or heard it (including the quote, if possible).

show

WORD OF THE DAY

bloviate

play

to speak or write verbosely and windily

BROWSE DICTIONARY

circular canal

circular canon

circular dichroism

circular error

circular file

Test Your Vocabulary

Odd Habits and Quirks Quiz

Which of the following best describes an easily irritated person?

Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ

Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Words at Play

alt-5ad8fc71357ed

Words We're Watching: 'Bluebeard,' the Verb

No, it's not a coiffure trend

alt-5ad8d3361fb97

Where 'Cliff-hangers' Come From

You're on the edge of your seat

alt-5ad77fad37d22

What the #@*% Is a ‘Grawlix'?

We can thank Beetle Bailey.

alt-5ad76a1542e73

'Altho' vs. 'Although'

Altho doesn't get much love.

Ask the Editors

2017 Word of the Year: Behind the Scenes

How we chose 'feminism'

video-title-words-of-the-year-1066

Words of the Year: 1066

Or, Why Pig Meat is Called 'Pork' and Cow Meat is Called 'Beef'

video-literally

Literally

How to use a word that (literally) drives some people nuts.

video-his-or-her

Is Singular 'They' a Better Choice?

The awkward case of 'his or her'

Word Games

Odd Habits and Quirks Quiz

Test your knowledge of strange human behaviors.

Take the quiz

cats-on-impossible-timber

More Confusing Words—Quiz

How many of these commonly confused words do you know?

Take the quiz

Name That Thing

Name That Thing

Test your visual vocabulary with our 10-question challenge!

Take the quiz

Word Winder's CrossWinder

Word Winder's CrossWinder

A game of winding words.

Play the game