Polar/ˈpəʊlər/ Definition 1 of 3Pro Tip 1/3Geographic Focus Polar often describes the natural environment and climate near Earth's poles. Global warming threatens the polar habitats. Pro Tip 2/3Context Specific Use 'polar' to specify the context, like 'polar expedition,' highlighting its association with extreme cold. She specializes in polar wildlife. Pro Tip 3/3Not Just Cold 'Polar' implies unique conditions, beyond just cold, like perpetual daylight or darkness in seasons. The polar night is a fascinating phenomenon.