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From Biology-Online Dictionary | Biology-Online Dictionary
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(physics) Not containing a dipole; lacking a permanently dipolar molecule.

(chemistry) Pertaining to a compound that is nonionic or does not dissociate into ions.


Examples of nonpolar compounds are fats and oil. Many nonpolar compounds are hydrophobic. They do not readily dissolve in water but they do in a nonpolar solvent.

Word origin: L nōn-, not + polar.

Related forms: nonpolarity (noun).
Related terms:

Compare: polar.