a white, crystalline, bitter alkaloid, C 8 H 10 N 4 O 2 , usually derived from coffee or tea: used in medicine chiefly as a nervous system stimulant.
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a white crystalline bitter alkaloid responsible for the stimulant action of tea, coffee, and cocoa: a constituent of many tonics and analgesics. Formula: C8H10N4O2 See also xanthine (sense 2)
A bitter white alkaloid found in tea leaves, coffee beans, and various other plant parts. It is a mild stimulant. Caffeine is a xanthine and similar in structure to theobromine and theophylline. Chemical formula: C8H10N4O2.
containing caffeine: a caffeinated soft drink. Contemporary Examples Cara Delevingne’s Face Gets Made Into a Cake; Harper’s Bazaar U.K. to Launch Online Exhibit Featuring Model Self-Portraits The Fashion Beast Team August 22, 2013 Can Food Make You Infertile? Foods to Eat and Avoid Anneli Rufus December 8, 2011 The Capital Goes Nuts Simon Schama November […]
chronic toxicity caused by excessive intake of caffeine, characterized by anxiety, irritability, palpitations, insomnia, and digestive disturbances. Contemporary Examples Was Demi Moore Really Addicted to Red Bull? Anneli Rufus January 31, 2012 Was Demi Moore Really Addicted to Red Bull? Anneli Rufus January 31, 2012
an uncouth person; lowlife.
a long garment having long sleeves and tied at the waist by a girdle, worn under a coat in the Middle East. a long, full, usually collarless robe with wide sleeves that is worn at home for lounging or entertaining or at the beach as a cover-up. Historical Examples The Boy Slaves Mayne Reid The […]