(tŏ-bak'ō )

[Sp. tabaco ]

A plant (Nicotiana tabacum) whose leaves are cultivated, dried, and adulterated for use in smoking, chewing, and snuffing.

SEE: risk factor; passive smoking.

combustible t.Tobacco meant to be smoked; smoking tobacco.

Indian t.Lobelia inflata.

smokeless t.Tobacco used in the form of snuff, tobacco powder, or chewing tobacco. These products irritate the oral mucosa and gingiva, and their continued use results in an increased risk of cancer of the mouth, larynx, throat, and esophagus. Smokeless tobacco contains nicotine and is addictive. Its use is greatest among adolescents, esp. males. An estimated 1.4% to 8.8% of adults in the U.S. use smokeless tobacco products.

SEE: snuff (2).

spit t.

SEE: smokeless tobacco .