1. Relating to, situated in, or affecting the viscera.
2. Being or arising from impulse or sudden emotion rather than from thought or deliberation: "The scientific approach to life is not really appropriate to states of visceral anguish" (Anthony Burgess). See Synonyms at instinctive.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.