Also found in: Medical, Encyclopedia, Wikipedia.


 (zĕn′ə-bī-ŏt′ĭk, zē′nə-)
Not a natural component of a particular organism or biological system. Used of chemical compounds.
A xenobiotic chemical, such as a pesticide.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Chemistry) a chemical foreign to or not produced by an organism
(Chemistry) pertaining to a chemical compound foreign to or not produced by an organism
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌzɛn ə baɪˈɒt ɪk, -bi-, ˌzi nə-)

a chemical or substance that is foreign to an organism or biological system.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
Mentioned in ?
References in periodicals archive ?
The study 'KLF-1 orchestrates a xenobiotic detoxification program essential for longevity of mitochondrial mutants' was now published in the journal 'Nature Communications'.
We deem that this topic appears extremely interesting, but at the same time controversial: it is known that NAT2 enzyme has a critical role in the initial biotransformation of multiple xenobiotic substances (among all aromatic amines and hydrazines) and that several polymorphisms and alleles of its gene characterize the genome of general population (with different distribution in the world) (2).
These wastewaters contained organic micropollutants that affected signaling pathways, consistent with xenobiotic metabolism; in addition, they caused toxicity to aquatic organisms such as Daphnia magna.
Objective: Biotransformation of xenobiotics is critical for their metabolism and removal from the body which is carried out by xenobiotic metabolizing enzymes.
Xenobiotic metabolism studies in rats, farm animals and plants identify and quantify the active ingredient and its related degradation products, i.e.
2006) modulate the expression of genes involved in xenobiotic and energy homeostasis (Evans and Mangelsdorf 2014).
By doing so, I will also skip the important contribution of xenobiotic oxidation on infertility for both sexes.
Nociceptive elements are grouped under the voice of xenobiotic.The xenobiotic metabolism study is fundamental to a rational understanding of the pharmacology, toxicology research on cancer and addiction.
Genetical predisposition to resist xenobiotic stress could, in principle, be explained in terms of single nucleotide polymorphisms (SNPs) of complex MDR system components, starting from drug transporters, censoring receptors, and xenobiotic/drug metabolising enzymes (see several examples below).
Xenobiotic compounds are classified as any foreign chemical substance inside the biological system.
The constitutive levels of expression of xenobiotic-metabolizing enzyme in a tissue determine its ability to detoxify xenobiotic compounds and endogenous metabolic stress.