Measured from or referred to a pole: polar distance; polar diameter.
Relating to, connected with, or located near the North Pole or South Pole.
Passing over a planet's north and south poles: a polar orbit.
Traveling in an orbit that passes over a planet's north and south poles.
Serving as a guide, as a polestar or a pole of the earth.
Occupying or characterized by opposite extremes: "In creative territory [they] make a strange yet ineluctable couple, more complementary, even polar, than twin-like” ( Josh Rubins).
Central or pivotal.
Chemistry Relating to or characterized by a dipole: a polar molecule.
Ionizing when dissolved or fused: polar bonds or linkages.