<p><strong>Noun</strong></p><ul><li>infinite time; duration without beginning or end.</li><li>eternal existence, especially as contrasted with mortal life: the eternity of God.</li><li>the timeless state into which the soul passes at a person's death.</li><li>an endless or seemingly endless period of time: We had to wait an eternity for the check to arrive.</li><li>the truths or realities of life and thought that are regarded as timeless or eternal.</li></ul>