Synonyms and related words :
Antarctic Zone, Arctic Circle, Arctic Zone, Frigid Zones, Torrid Zone, Tropic of Cancer, Tropic of Capricorn, Variable Zones, anticyclone, antitrades, calm, climate, clime, dead calm, deathlike calm, doldrums, equator, flat calm, latitude, longitude, longitude in arc, lull, meridian, oily calm, parallel, polar easterlies, prevailing westerlies, prime meridian, roaring forties, subtropics, the line, trade wind, trades, tropic, tropics, wind-equator, windlessness, zone