nonpolar

Chemical polarity, also known as bond polarity or simply polarity, is a concept in chemistry which describes how equally bonding electrons are shared between atoms. It is a physical property of compounds and affects other physical properties such as solubility, melting points and boiling points. Polarity also affects intermolecular forces, leading to some compounds or molecules within compounds being labelled as polar or non-polar.
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Adjective
1. not ionic; "a nonionic substance"
(synonym) nonionic

A dipole is a pair of electric charges or magnetic poles of equal magnitude but opposite polarity (positive and negative) separated by a small distance. Polarized (polar) molecules possess this electromagnetic quality.