Meaning
A shiny indigo-blue sulfide mineral, CuS, that is an ore of copper.
Etymology
Origin: Italian
Named after Italian mineralogist Niccolo Covelli (1790–1829) + -ite.
NYT Puzzle Appearances
No published puzzle dates on file for this word yet. It is part of the official NYT Spelling Bee word list for 2020, 2022, 2024.