There are 2 main definitions of regulus in English:

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regulus 1

Line breaks: regu|lus
Pronunciation: /ˈrɛɡjʊləs/

noun (plural reguluses or reguli ˈrɛɡjʊlʌɪˈrɛɡjʊliː)

1 Chemistry , archaic A metallic form of a substance, obtained by smelting or reduction.
Example sentences
  • He also bought the nearby smelting works at Scotts Creek to refine copper regulus produced at the Bremer mine.
  • When it demolished the furnace in 1882 it recovered also some copper from stockpiled regulus.
  • This was smelted, which reduced the bulky and heavy copper ore to a much smaller and more valuable regulus, before transporting it to the English and Australian Copper Smelting Company at Port Adelaide or to England.
2A petty king or ruler.
Example sentences
  • The king left him as sub regulus whenever he was out of the country.

Derivatives

reguline

1
Pronunciation: /ˈrɛɡjʊlʌɪn/
adjective

Origin

Late 16th century: from Latin, diminutive of rex, reg- 'king'; originally in the phrase regulus of antimony (denoting metallic antimony), apparently so named because of its readiness to combine with gold.

Words that rhyme with regulus

pendulous

Definition of regulus in:

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There are 2 main definitions of regulus in English:

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Regulus 2 Line breaks: Regu|lus
Pronunciation: /ˈrɛɡjʊləs/
Astronomy
The brightest star in the constellation Leo. It is a triple system of which the primary is a hot dwarf star.

Origin

Latin, literally 'little king'.

Definition of regulus in:

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