illuminant

play
noun il·lu·mi·nant \i-ˈlü-mə-nənt\

Definition of illuminant

  1. :  an illuminating device or substance

Examples of illuminant in a sentence

  1. at the time, a spermaceti candle was the brightest indoor illuminant available

1644

First Known Use of illuminant

1644


Medical Dictionary

illuminant

play
noun il·lu·mi·nant \-nənt\

Medical Definition of illuminant

  1. :  an illuminating device or substance (as for a microscope)


Learn More about illuminant


Seen and Heard

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

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

a person who is a bore or nuisance

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

  • peter-bruegel-tower-of-babel-painting
  • What language does pajama come from?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Word Winder's CrossWinder

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

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!