Definitions for "Nonpolar molecule"
Molecule lacking any asymmetric accumulation of positive or negative charge; such molecules are generally insoluble in water.
A molecule whose electric charge is evenly balanced from one end of the molecule to the other.
A molecule in which the center of positive charge and the center of negative charge coincide. Examples are CCl4 and CO2; counterexamples are CHCl3 and H2O.