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• regulus
  regulus

  noun

  Regulus, a first magnitude star in the constellation Leo.
• Regulus
  Regulus

  noun

  Marcus Atilius died 250? b.c., Roman general.

regulus

¹ American  

[reg-yuh-luhs] / ˈrɛg yə ləs /

noun

plural

reguluses, reguli

1. Astronomy. Regulus, a first magnitude star in the constellation Leo.

2. Metallurgy.

   1. the metallic mass that forms beneath the slag at the bottom of the crucible or furnace in smelting ores.

   2. an impure intermediate product obtained in smelting ores.

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Regulus ² American  

[reg-yuh-luhs] / ˈrɛg yə ləs /

noun

1. Marcus Atilius died 250? b.c., Roman general.

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regulus ¹ British  

/ ˈrɛɡjʊləs /

noun

1. impure metal forming beneath the slag during the smelting of ores

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Regulus ² British  

/ ˈrɛɡjʊləs /

noun

1. the brightest star in the constellation Leo. Visual magnitude: 1.3; spectral type: B8; distance: 69 light years

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Regulus ³ British  

/ ˈrɛɡjʊləs /

noun

1. Marcus Atilius (ˈmɑːkəs əˈtɪlɪəs). died ?250 _bc , Roman general; consul (267; 256). Captured by the Carthaginians in the First Punic War, he was sent to Rome on parole to deliver the enemy's peace terms, advised the Senate to refuse them, and was tortured to death on his return to Carthage

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Regulus Scientific  

/ rĕg′yə-ləs /

1. A bright triple star in the constellation Leo, with an apparent magnitude of 1.35. Scientific name: Alpha Leonis.

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Other Word Forms

• reguline
  adjective

Etymology

Origin of regulus

First recorded in 1550–60; from Latin rēgulus literally, “little king” (diminutive of rēx ); in early chemistry, “antimony,” so called because it readily combines with gold (the king of metals); see -ule

Example Sentences

Kynvard, regulus of Ferlex and Brecon, succeeded his father, Hoyw; and Kyndeg, who was contemporary with Cadwallader, and lived a.d.

From Antigua and the Antiguans, Volume II (of 2) A full account of the colony and its inhabitants from the time of the Caribs to the present day by Anonymous

It is probable, however, that the sulphur in the regulus would attack the iron and make it black.

From De Re Metallica, Translated from the First Latin Edition of 1556 by Agricola, Georgius

A regulus with more than this is "too fine," and with less "too coarse."

From A Text-book of Assaying: For the Use of Those Connected with Mines. by Beringer, Cornelius

What is commonly called arsenic is the calx of a semi-metal called the regulus of arsenic.

From Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry by Priestley, Joseph

If the regulus be then fused with metallic iron the sulphur is removed by the iron, and metallic lead is left.

From A Text-book of Assaying: For the Use of Those Connected with Mines. by Beringer, Cornelius