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

cobaltite

play
noun co·balt·ite \ˈkō-ˌbȯl-ˌtīt, kō-ˈ\

Definition of cobaltite

  1. :  a grayish to silver-white mineral consisting of a sulfur arsenide of cobalt also containing iron and sometimes nickel and used in making smalt



Variants of cobaltite

or cobaltine play \-ˌtēn\

Origin of cobaltite

cobaltite, alteration of cobaltine, from French, from cobalt


First Known Use: 1868


Learn More about cobaltite


Seen and Heard

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

WORD OF THE DAY

a smart aleck

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image567572573

Which of these is a synonym of unctuous?

maudlin oily prompt angry
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ