Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

regulus

play
noun reg·u·lus \ˈre-gyə-ləs\

Definition of regulus

  1. 1 capitalized :  a first-magnitude star in the constellation Leo

  2. 2 [Medieval Latin, metallic antimony, from Latin] :  the more or less impure mass of metal formed beneath the slag in smelting and reducing ores



Origin of regulus

New Latin, from Latin, petty king, from reg-, rex king — more at royal


First Known Use: 1559


Regulus

play
biographical name Reg·u·lus \ˈre-gyə-ləs\

Definition of Regulus

  1. Marcus Atilius d ca 250 b.c. Rom. gen.




Learn More about regulus


Seen and Heard

What made you want to look up regulus? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

February 10, 2016

to put in good humor

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image1037863653

Which of the following refers to thin, bending ice, or to the act of running over such ice?

pince-nez kittly-benders duvet spindrift
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ