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); -ule

Example Sentences

Rock′-fē′ver, intermittent fever; Rock′-fire, in pyrotechny, a composition of resin, sulphur, nitre, regulus of antimony, and turpentine, burning slowly; Rock′-fish, a name applied to various different varieties of wrasse, the striped bass, black goby, &c.;

From Chambers's Twentieth Century Dictionary (part 3 of 4: N-R) by Various

Thus the silver, as in the last process, is converted into a sulphide, and is absorbed in the regulus, while the metallic antimony alloys with the gold and settles to the bottom of the pot.

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

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

The ores, too poor for shipment, are reduced locally, and the regulus exported to London.

From British Borneo Sketches of Brunai, Sarawak, Labuan, and North Borneo by Treacher, W. H. (William Hood), Sir

For clarity we introduced the term "regulus" for the Latin mistura.

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