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toxic

[tok-sik] /ˈtɒk sɪk/
adjective
1.
of, pertaining to, affected with, or caused by a toxin or poison:
a toxic condition.
2.
acting as or having the effect of a poison; poisonous:
a toxic drug.
3.
pertaining to or noting debt that will probably not be repaid:
toxic mortgages.
4.
pertaining to or noting a financial instrument or other asset that has no value or an unknown value because there is no market for it:
toxic mortgage-backed securities.
noun
5.
a toxic chemical or other substance.
Origin
1655-1665
1655-65; < Late Latin toxicus poisonous, adj. derivative of Latin toxicum poison < Greek toxikón (orig. short for toxikòn phármakon literally, bow poison, i.e., poison used on arrows), equivalent to tóx(on) bow + -ikon, neuter of -ikos -ic
Related forms
toxically, adverb
hypertoxic, adjective
nontoxic, adjective
nontoxically, adverb
posttoxic, adjective
untoxic, adjective
untoxically, adverb
Can be confused
toxic, toxin.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for toxically

toxic

/ˈtɒksɪk/
adjective
1.
of, relating to, or caused by a toxin or poison; poisonous
2.
harmful or deadly
3.
(of a financial asset) likely to cause significant loss to the holder
Derived Forms
toxically, adverb
Word Origin
C17: from medical Latin toxicus, from Latin toxicum poison, from Greek toxikon (pharmakon) (poison) used on arrows, from toxon arrow
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for toxically
toxic
1664, from Fr. toxique, from L.L. toxicus "poisoned," from L. toxicum "poison," from Gk. toxikon (pharmakon) "(poison) for use on arrows," from toxikon, neut. of toxikos "pertaining to arrows or archery," and thus to a bow, from toxon "bow," probably from a Scythain word that also was borrowed into L. as taxus "yew."
Online Etymology Dictionary, © 2010 Douglas Harper
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toxically in Medicine

toxic tox·ic (tŏk'sĭk)
adj.

  1. Of, relating to, or caused by a toxin or other poison.

  2. Capable of causing injury or death, especially by chemical means; poisonous.

n.
A toxic chemical or other substance.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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toxically in Science
toxic
  (tŏk'sĭk)   
  1. Relating to or caused by a toxin.

  2. Capable of causing injury or death, especially by chemical means; poisonous.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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