lawrencium

noun

law·​ren·​ci·​um lȯ-ˈren(t)-sē-əm How to pronounce lawrencium (audio)
: a short-lived radioactive element produced artificially see Chemical Elements Table

Examples of lawrencium in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Since 2015 a working group at the International Union of Pure and Applied Chemistry has been refereeing a debate over which elements should go in the third column of the table: lanthanum and actinium (elements 57 and 89) or lutetium and lawrencium (71 and 103). Stephanie Pappas, Scientific American, 14 May 2024

Word History

Etymology

Ernest O. lawrence + -ium

First Known Use

1961, in the meaning defined above

Time Traveler
The first known use of lawrencium was in 1961

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Cite this Entry

“Lawrencium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lawrencium. Accessed 7 Nov. 2025.

Kids Definition

lawrencium

noun
law·​ren·​ci·​um lȯ-ˈren(t)-sē-əm How to pronounce lawrencium (audio)
: a short-lived radioactive element produced artificially see element

Medical Definition

lawrencium

noun
law·​ren·​ci·​um lȯ-ˈren(t)-sē-əm How to pronounce lawrencium (audio)
: a short-lived radioactive element that is produced artificially from californium
symbol Lr
see Chemical Elements Table

More from Merriam-Webster on lawrencium

Last Updated: - Definition revised
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