of or consisting of a solution containing one mole of solute per thousand grams of solvent
Word origin
C20: from mole4 + -al1
molal in American English
(ˈmoʊləl)
adjective
Chemistry
relating to the mole or gram-molecular weight; specif., designating a solution with a concentration equal to one mole of the solute in 1,000 grams of the solvent