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Lewis base

noun

, Chemistry.
  1. any substance capable of forming a covalent bond with an acid by transferring a pair of electrons to it.


Lewis base

noun

  1. a substance capable of donating a pair of electrons to an acid to form a covalent bond Compare Lewis acid
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word History and Origins

Origin of Lewis base1

First recorded in 1960–65; named after G. N. Lewis
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Word History and Origins

Origin of Lewis base1

C20: named after G. N. Lewis (1875–1946), US chemist
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Example Sentences

Mr Lewis' base salary remained at £1.25m and will stay flat this year.

From BBC

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Lewis and Harrislewis bolt