[ zen-uh-bahy-ot-ik, -bee-, zee-nuh- ]
/ ˌzɛn ə baɪˈɒt ɪk, -bi-, ˌzi nə- /


a chemical or substance that is foreign to an organism or biological system.

Nearby words

  1. xenakis,
  2. xenia,
  3. xenic acid,
  4. xenical,
  5. xeno-,
  6. xenoblast,
  7. xenocrates,
  8. xenocratic,
  9. xenocryst,
  10. xenocurrency

Origin of xenobiotic

First recorded in 1915–20; xeno- + biotic

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Medicine definitions for xenobiotic


[ zĕn′ə-bī-ŏtĭk, zē′nə- ]


Foreign to the body or to living organisms. Used of chemical compounds.


A xenobiotic chemical.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.