a compound with molecule-size pores, as some sodium aluminum silicates, that chemically locks molecules in them: used in purification and separation processes.
(chem) a material that can absorb large amounts of certain compounds while not absorbing others and is thus suitable for use in separating mixtures
noun, Spectroscopy. 1. the spectrum of light emitted or absorbed by a species of molecule.
- Molecular surgery
molecular surgery n. A technique used to increase the drug susceptibility of tumor cells by introducing gene segments into such cells so as to alter their drug resistance.
- Molecular volume
noun 1. the volume occupied by one mole of a substance Also called molar volume
noun, Chemistry. 1. the average weight of a molecule of an element or compound measured in units once based on the weight of one hydrogen atom taken as the standard or on 1/16 (0.0625) the weight of an oxygen atom, but after 1961 based on 1/12 (0.083) the weight of the carbon-12 atom; the sum […]