teratogen

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teratogen

 [ter´ah-to-jen]
an agent or influence that causes physical defects in the developing embryo; called also developmental toxicant. adj., adj teratogen´ic.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

ter·a·to·gen

(ter'ă-tō-jen),
Any agent (for example, a drug) or factor that induces or increases incidence of abnormal prenatal development.
[terato- + G. -gen, producing]
Farlex Partner Medical Dictionary © Farlex 2012

teratogen

(tə-răt′ə-jən, tĕr′ə-tə-)
n.
An agent, such as a virus, a drug, or radiation, that causes malformation of an embryo or fetus.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

teratogen

Genetics Any agent, chemical, or factor that causes a physical defect in a developing embryo or fetus; maternal medications with known teratogenic effects include aminopterin–spontaneous abortion, malformations; anticoagulants; anticonvulsants; cytotoxic drugs; mepivacaine–bradycardia, death; methimazole & propylthiouracil-goiter; 131I–destruction of fetal thyroid; ♂ sex hormones–methyltestosterone, 17-α-ethinyl-testosterone, 17-α-ethinyl-19-nortestosterone–causes masculinization of ♀, tetracycline–hypoplasia and pigmentation of tooth enamel; trimethadione–abortion, multiple malformations, mental retardation; ♀ sex hormones cause virilization with defective external genitalia, transplacental carcinogenesis by DES. See Fetal warfarin syndrome, Fetal hydantoin syndrome, Thalidomide. Cf Litogen.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

ter·a·to·gen

(ter'ă-tō-jen)
A drug or other agent that can produce congenital anomalies or birth defects or increase the incidence of an anomaly in the population.
[terato- + G. -gen, producing]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

teratogen

Any agent capable of causing a severe congenital bodily anomaly (monstrosity).
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

teratogen

a substance which increases the incidence of congenital malformations.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

Teratogen

Any substance, agent, or process that interferes with normal prenatal development, causing the formation of one or more developmental abnormalities of the fetus.
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.

ter·a·to·gen

(ter'ă-tō-jen)
Any substance that induces incidence of abnormal prenatal development.
[terato- + G. -gen, producing]
Medical Dictionary for the Dental Professions © Farlex 2012