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nicotine
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8 dictionary results for: Nicotine
Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This
nic·o·tine       [nik-uh-teen, -tin, nik-uh-teen] Pronunciation Key
–noun Chemistry.
a colorless, oily, water-soluble, highly toxic, liquid alkaloid, C10H14N2, found in tobacco and valued as an insecticide.
[Origin: 1810–20; < F; see nicotiana, -ine2]

—Related forms
nic·o·tined, adjective
nic·o·tine·less, adjective
Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.
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American Heritage Dictionary - Cite This Source - Share This
nic·o·tine       (nĭk'ə-tēn')  Pronunciation Key 
n.   A colorless, poisonous alkaloid, C10H14N2, derived from the tobacco plant and used as an insecticide. It is the substance in tobacco to which smokers can become addicted.


[French, from New Latin nicotiāna; see nicotiana.]

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The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Online Etymology Dictionary - Cite This Source - Share This
nicotine 
"poisonous alkaloid found in tobacco leaves," 1819, from Fr. nicotine, from Mod.L. Nicotiana, formal botanical name for the tobacco plant, named for Jean Nicot (c.1530-1600), Fr. ambassador to Portugal, who sent tobacco seeds and powdered leaves back to France 1561. His name is a dim. of Nicolas.

Online Etymology Dictionary, © 2001 Douglas Harper
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WordNet - Cite This Source - Share This
nicotine

noun
an alkaloid poison that occurs in tobacco; used in medicine and as an insecticide 

WordNet® 3.0, © 2006 by Princeton University.
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The American Heritage Science Dictionary - Cite This Source - Share This
nicotine       (nĭk'ə-tēn')  Pronunciation Key 
A colorless, poisonous compound occurring naturally in the tobacco plant. It is used in medicine and as an insecticide, and it is the substance in tobacco products to which smokers can become addicted. Nicotine is an alkaloid. Chemical formula: C10H14N2.

The American Heritage® Science Dictionary
Copyright © 2002 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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American Heritage New Dictionary of Cultural Literacy, Third Edition - Cite This Source - Share This
nicotine [(nik-uh-teen)]

A poisonous chemical substance found in the tobacco plant.


The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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American Heritage Stedman's Medical Dictionary - Cite This Source - Share This

nicotine nic·o·tine (nĭk'ə-tēn')
n.
A colorless, poisonous alkaloid derived from the tobacco plant and used as an insecticide. It is the substance in tobacco to which smokers can become addicted.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Webster's Revised Unabridged Dictionary - Cite This Source - Share This

Nicotine

Nic"o*tine\ (? or ?), n. [F. nicotine. See Nicotian.] (Chem.) An alkaloid which is the active principle of tobacco. It is a colorless, transparent, oily liquid, having an acrid odor, and an acrid burning taste. It is intensely poisonous. --Ure.

Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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