There are 2 definitions of Regulus in English:


Syllabification: Reg·u·lus
Pronunciation: /ˈregyələs
  • The brightest star in the constellation Leo. It is a triple system of which the primary is a hot dwarf star.


Latin, literally 'little king'.

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Word of the day skosh
Pronunciation: skōSH
a small amount; a little

There are 2 definitions of Regulus in English:


Syllabification: reg·u·lus
Pronunciation: /ˈregyələs

noun (plural reguluses or reguli /-ˌlī, -lē/)

  • 1 Chemistry , • archaic A metallic form of a substance obtained by smelting or reduction.
    More 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.



Pronunciation: /ˈregyəˌlīn, -lin/


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.

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