bournonite
[ bawr-nuh-nahyt, bohr-, boo r- ]
/ ˈbɔr nəˌnaɪt, ˈboʊr-, ˈbʊər- /
noun Mineralogy.
a sulfide of lead, antimony, and copper, PbCuSbS3, occurring in gray to black crystals or granular masses.
QUIZZES
TAKE THIS QUIZ TO SEE WHAT YOU KNOW ABOUT HIGH SCHOOL PUNCTUATION!
Commas mark divisions in sentences. Periods end declarative sentences. Apostrophes show possession. Easy, right? Well, punctuation can get pretty tricky—fast. Think you got what it takes to be a punctuation expert? Take our quiz to prove it!
Question 1 of 10
Which of the options below is the best punctuation for the sentence? It__s your turn to pick the movie __ but your sister gets to pick the board game we _ re going to play.
Its your turn to pick the movie but your sister gets to pick the board game we’re going to play.
It’s your turn to pick the movie but your sister gets to pick the board game were going to play.
It’s your turn to pick the movie, but your sister gets to pick the board game we’re going to play.
TAKE THE QUIZ TO FIND OUTAlso called cogwheel ore.
Origin of bournonite
1795–1805; named after Count J. L. de Bournon (died 1825), French mineralogist; see -ite1
Words nearby bournonite
bourn, bourne, bournemouth, bourneville's disease, bourneville-pringle disease, bournonite, bournonville, bourrée, bourse, bourtree, bouse
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020