regulus

noun

reg·​u·​lus ˈre-gyə-ləs How to pronounce regulus (audio)
1
capitalized : a first-magnitude star in the constellation Leo
2
[Medieval Latin, metallic antimony, from Latin] : the more or less impure mass of metal formed beneath the slag in smelting and reducing ores

Examples of regulus in a Sentence

Recent Examples on the Web
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Regulus will be only three degrees away from the moon, about equal to the width of your two middle fingers held at arm’s length. National Geographic, 4 July 2016

Word History

Etymology

New Latin, from Latin, petty king, from reg-, rex king — more at royal

First Known Use

1559, in the meaning defined at sense 1

Time Traveler
The first known use of regulus was in 1559

Dictionary Entries Near regulus

Cite this Entry

“Regulus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/regulus. Accessed 1 Dec. 2024.

Biographical Definition

Regulus

biographical name

Reg·​u·​lus ˈre-gyə-ləs How to pronounce Regulus (audio)
Marcus Atilius died circa 250 b.c. Roman general

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