from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun 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.
from The Century Dictionary.
- noun A volatile alkaloid base (C10H14N2) obtained from tobacco.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Chem.) An alkaloid which is the active principle of tobacco (C10H14N2). It occurs in tobacco plants (
Nicotiana tabacumand Nicotiana rusticum) to the extent of 2 to 8%, in combination with malic acid or citric acid. It is a colorless, transparent, oily liquid, having an acrid odor, and an acrid burning taste. It is intensely poisonous. The apparently addictive effects of tobacco smoking have been ascribed largely to the effect of nicotine, and the controlled administration of nicotine on various forms has been used as a technique for assisting efforts to stop the smoking habit.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun chemistry An
alkaloid(C10H14N2), commonly occurring in the tobaccoplant. In small doses it is a habit-forming stimulant; in larger doses it is toxicand is often used in insecticides.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun an alkaloid poison that occurs in tobacco; used in medicine and as an insecticide
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/Share-Alike License
They weren't based on hard science connecting health hazards to long-term nicotine addiction, but were set to mirror the length of use in clinical trials.
I've heard it said that nicotine is more addictive than any other drug, including heroin.
The vast majority of smokers start in childhood and then find it very difficult to quit because nicotine is addictive.
Reesearch findings conclude that alcoholics in early recovery tend to have impaired cognitive functioning, and nicotine is known to have beneficial effects under certain circumstances.
You people seem to use the same argument that the tobacco corporations used against the scientific theory that nicotine is addictive and smoking causes cancer.
New genotyping research from the Center for Addiction and Mental Health found that the enzyme known to metabolize both the smoking cessation drug bupropion and nicotine is highly genetically variable in all ethnicities and influences smoking cessation.
"That is an indication that nicotine is a critical component of tobacco smoke and that it is the desire to obtain nicotine that is an important drive of smoking behaviour."
While nicotine is highly addictive, researchers have also shown the drug to enhance learning and memory -- a property that has launched efforts to develop nicotine-like drugs to treat cognitive deficits in Alzheimer's and Parkinson's diseases, schizophrenia and attention-deficit/hyperactivity disorder.
Medicines or products that help you get over a physical addiction to nicotine are called nicotine replacement therapies NRT.
LIMBAUGH: “It has not been proven that nicotine is addictive, the same with cigarettes causing emphysema [and other diseases].”