Breadcrumb Home > Dictionary > Index N nervous system: Meaning and Definition of Find definitions for: nerv'ous sys"tem Pronunciation: [key] — Anat., Zool. Anat.,Zool. the system of nerves and nerve centers in an animal or human, including the brain, spinal cord, nerves, and ganglia. a particular part of this system. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. nervous Nellie nervule TrendingHere are the facts and trivia that people are buzzing about. Jewish Holidays, 2010-2030 (A.M. 5770-5791) Western Christian Holidays, 2010-2030 12 Steps to a New Year New Year's Resolution to Slim Down? Martin Luther King Speeches Books of the Bible: Old Testament Books in Order ✖ Related Content Daily Word Quiz: ennui Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language