<p><strong>Adjective</strong></p><ul><li>not mortal; not liable or subject to death; undying: our immortal souls</li><li>remembered or celebrated through all time: the immortal words of Lincoln</li><li>not liable to perish or decay; imperishable; everlasting</li><li>perpetual; lasting; constant: an immortal enemy</li><li>of or relating to immortal beings or immortality</li><li>(of a laboratory-cultured cell line) capable of dividing indefinitely</li></ul><p><strong>Noun</strong></p><ul><li>an immortal being</li><li>a person of enduring fame: Bach, Milton, El Greco, and other immortals</li><li>genius, titan, giant</li><li>the Immortals, the 40 members of the French Academy</li><li>(often initial capital letter) any of the gods of classical mythology</li></ul>