Crookes

American  

[krooks] / krʊks /

noun

1. Sir William, 1832–1919, English chemist and physicist: discovered the element thallium and the cathode ray.

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Crookes British  

/ krʊks /

noun

1. Sir William. 1832–1919, English chemist and physicist: he investigated the properties of cathode rays and invented a type of radiometer and the lens named after him

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Crookes Scientific  

/ krks /

1. British chemist and physicist who discovered thallium in 1861 and invented the radiometer (1873–76). He also developed the Crookes tube, a modified vacuum tube that was later used by W.C. Roentgen and J.J. Thomson in experiments that led to the discovery of x-rays and the electron, respectively.

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Example Sentences

Also previewing new material was London soul-pop singer Joy Crookes.

From BBC • Jun. 29, 2025

"Joy Crookes is an artist who I've never seen live before who I love to hang out with on the radio," he says.

From BBC • May 22, 2025

According to chairman Mike Crookes, the facility would "blight this area" and the economic impact on tourism could be "profound" and "catastrophic".

From BBC • Oct. 21, 2024

Coachella's 2024 line-up has been praised for its South Asian representation, with the likes of Mercury prize nominee Joy Crookes - who's from South London and is half Bangladeshi - performing.

From BBC • Feb. 16, 2024

I have sat for her several times with Mr. Crookes, and seen the tests applied which are mentioned in his book on the subject.

From There is no Death by Marryatt, Florence