The arctic circle is a lesser circle, parallel to the equator, 23 deg 28' from the north pole. This and the antarctic circle are called the polar circles, and between these and the poles lie the frigid zones. See zone.
Origin: oe. Artik, OF. Artique, f. Arctique, L. Arcticus, fr. Gr, fr. A bear, also a northern constellation so called; akin to L. Ursus bear, Skr. Ksha. Extremely cold; an arctic climate; a frigid day; gelid waters of the North Atlantic; glacial winds; icy hands; polar weather.