<p><strong>Adjective</strong></p><ul><li>Of, relating to, or near an equator, especially the equator of the earth.</li><li>Of, like, or typical of the regions at the earth's equator: equatorial temperatures.</li></ul><p><strong>Noun</strong></p><ul><li>A telescope mounting having two axes of motion, one parallel to the earth's axis and one at right angles to it.</li><li>Also called equatorial telescope.</li><li>A telescope with such a mounting.</li></ul>