Definition of primary rocks
: the rocks believed to have been first formed
— called also primitive rocks
Love words? Need even more definitions?Merriam-Webster unabridged
Words at Play
“In Vino Veritas” and Other Latin Phrases to Live By
Top 10 Latin Phrases
10 Polite Words for Impolite People
'Smatchet', 'Fustilugs', and more
Is It 'Home In' or 'Hone In'?
Both are used, but home in does a better job of...
Merriam-Webster's Words of the Week - Jan. 21
From the week ending 1/21/2022
Ask the Editors