in geography, those inhabitants of the earth who live under the same meridian, and at the same distance from the equator; the one toward the north, and the other toward the south. Hence they have the same longitude; and their latitude is also the same, but of a different denomination. They are in the same semicircle of the meridian, but opposite in parallels. They have precisely the same hours of the day and night, but opposite seasons; and the night of the one is always equal to the day of the other.