butadiene
(noun) a gaseous hydrocarbon C4H6; used in making synthetic rubbers
Source: WordNet® 3.1
butadiene (countable and uncountable, plural butadienes)
(organic compound) An unsaturated hydrocarbon, CH2=CH-CH=CH2; it is obtained from petroleum and is used in the preparation of the synthetic rubber polybutadiene.
Source: Wiktionary
11 May 2025
(noun) a light drumstick with a rounded head that is used to strike such percussion instruments as chimes, kettledrums, marimbas, glockenspiels, etc.
Decaffeinated coffee is not caffeine-free. Studies from the National Institute of Health (US) have shown that virtually all decaf coffee types contain caffeine. A 236-ml (8-oz) cup of decaf coffee contains up to 7 mg of caffeine, whereas a regular cup provided 70-140 mg.
