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

A chemical compound so called from its power of dissolving gold. regulus of cobalt: early chemical term referring to the metallic mass of an ore.

From The Short-story by Atkinson, William Patterson

The test to be applied to the regulus by way of cupellation and parting of a sample with nitric acid, requires no explanation.

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

As to the recovery of the silver from the regulus, he states that 66 librae of silver give 132 librae of regulus.

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

In any event, if the powder was introduced into the molten bullion, the effect would be to form some silver sulphides in a regulus of different composition depending upon the varied ingredients of different compounds.

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