adj. Having total knowledge; knowing everything: an omniscient deity; the omniscient narrator. n. 1. One having total knowledge. 2. Omniscient God. Used with the. [Medieval Latin omnisciēns, omniscient- : Latin omni-, omni- + Latin sciēns, scient-, present participle of scīre, to know; see skei- in the Appendix of Indo-European roots.] om·niscience, om·niscien·cy n. om·niscient·ly adv. |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.