Molarity
/moʊˈlær.ɪ.ti/noun
A measure of concentration expressed as moles of solute per liter of solution.
Did you know?Molarity comes from the same Latin root as **mole**, originally meaning a great mass or heap, which is why chemistry turned an old word for a pile into a unit of invisible particles.
Etymological Timeline
Latin
Latin
moles
“A mass, heap, or large structure.”
Late Latin
Latin
molaris
“Pertaining to a millstone; later, grinding or relating to the molars.”
19th Century
English
molar
“Relating to moles in chemistry or to the molar teeth.”
Late 19th Century
English
molarity
“The state or quality of being molar; in chemistry, concentration measured by moles per unit volume.”
Modern English
English
molarity
“Concentration expressed as moles of solute per liter of solution.”