from The Century Dictionary.
- Pertaining to or containing a grain-molecule.
Sorry, no etymologies found.
If the molecular weight of any gas is known, the weight of a liter of the gas under standard conditions may be determined by dividing its gram-molecular weight by 22.4.
This weight in grams is called the _gram-molecular weight_ of a gas.
Thus the gram-molecular weight of a hydrochloric acid gas is 36.458.