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.


(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


(ˌzɛn ə baɪˈɒt ɪk, -bi-, ˌzi nə-)

a chemical or substance that is foreign to an organism or biological system.
Mentioned in ?
References in periodicals archive ?
Some xenobiotic compounds are readily secreted by synthetic cells, Some are poorly secreted and some are not secreted at all, But how does this transport occur Or why does it not occur These fundamental questions remain to be answered and this will have great implications on industrial biotechnology, Because improved secretion would bring down the production costs and enable the emergence of novel bio-based products.
The constitutive levels of expression of xenobiotic-metabolizing enzyme in a tissue determine its ability to detoxify xenobiotic compounds and endogenous metabolic stress.
The major part of the course is practical work in the laboratory, including in vitro cytotoxicity assays, toxicity and permeability assays using an in vitro epithelial barrier, in vitro models for endocrine disruptor activity, and in vitro models for xenobiotic metabolism.
Xenobiotic metals can replace essential metals such as zinc, which in turn can inhibit important enzymes and other functions.
The defending mechanism of drug or xenobiotic metabolizing enzymes, particularly CYP superfamily has been found to be altered by both genetic polymorphisms and the environmental factors.
Introduction: The young infant has immature kidney function, xenobiotic metabolism and gastrointestinal barrier function.
Conditions involving CKD, xenobiotic exposures that impair iron metabolism, inflammatory conditions that promote unregulated chronic cytokine activation or auto-immunity, hepatic diseases that impair iron transport and transmembrane binding, synergistic micronutrient deficiencies such as copper, excessive micronutrient competition, and dietary iron-binding interruptors explain this paradoxical phenomenon.
Xenobiotic Nuclear Receptors: Recent Advances and Novel Therapeutic Applications, 8:00 a.
The team conducted a comparison of the expression of 139 genes encoding for xenobiotic metabolizing enzymes in this model that is composed of human-derived skin cells.
We created microbes that can utilize some xenobiotic compounds that contain nitrogen, such as melamine," Stephanopoulos says.
Chapter 1, Pharmacology, is a useful overview of xenobiotic absorption including routes of administration, rates of absorption, and factors affecting bioavailability.