Advertisement Upgrade to remove ads


An addictive drug present in tobacco


Chemicals present in tobacco. Burning them releases carcinogens


Cancer-causing agents


Two main airways in the lungs; branches of the windpipe (trachea)


Slippery secretion produced by cells of the body's linings that protects the surfaces of the linings


Hair-like structures extending from the surface of cells that line the body passegeways. They wave, propelling mucus to sweep away debris


Respiratory disorder with irritation of the bronchi; thickened mucus; and a deep, harsh cough


Disease of the lungs in which many small, flexible air sacs burst and form a few large, rigid pockets

Chronic Obstructive Lung Disease

Aka COLD; Term for several diseases that interfere with breathing

Carbon Monoxide

Deadly gas formed during the burning of tobacco


Open sores in the lining of the digestive system


Spaces in the bones of the skull

Mainstream Smoke

Smoke that flows through the cigarette and into the lungs when the smoker inhales

Sidestream Smoke

Smoke that escapes into the air from the burning tip of the cigarette; inhaled by the smoker or others


Difficulty breathing; wheezing sounds from the chest caused by air rushing through narrowed air passages

Smokeless Tobacco

Used for snuff or chewing instead of smoking


Small portion of any form of smokeless tobacco


Whitish/greyish patches that develop in the mouths of tobacco users that may lead to cancer


Against the rules of right and wrong; not un line with accepted moral standards

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again


Reload the page to try again!


Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording