<p><strong>Noun</strong></p><ul><li>Half of the terrestrial globe or celestial sphere, especially one of the halves into which the Earth is divided.</li><li>A map or projection representing one of these halves.</li><li>A half of a sphere.</li><li>Anatomy: either of the lateral halves of the cerebrum or cerebellum.</li><li>The area within which something occurs or dominates; sphere; realm.</li></ul>