'molal' definitions:
Definition of 'molal'
(from WordNet)
adjective
Designating a solution containing one mole of solute per kilogram of solvent
Definition of 'molal'
From: GCIDE
- molal \molal\ adj. (Chem.) Being at a concentration with the designated number of moles (of solute) per 1000 grams of solvent; as, an 0.5 molal solution of glycerol in water. Compare molar. [WordNet 1.5]