stimulant

Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++

stim·u·lant /ˈstɪmjələnt/ noun [countable] 1 MDa drug or substance that makes you feel more active and full of energy 兴奋剂[药]；引起兴奋的物质 artificial stimulants 人造兴奋剂2 CAUSEsomething that encourages more of a particular activity 刺激（物） SYN stimulus economic stimulants 经济刺激因素stimulant to Increases in new construction would be a stimulant to the economy. 新建设项目的增加对经济可能是一种刺激。 —stimulant adjective a drug with stimulant properties 有兴奋作用的药物

Examples from the Corpus

stimulant• My presence is intended as he puts it, merely as a stimulant.• Nicotine, the drug found in tobacco, is a stimulant.• Doctor Baker came and gave me a stimulant.• Indeed, neuropeptide Y is the most potent central stimulant of feeding known.• There wasn't a murmur of disapproval from the drug testers - all the ingredients were natural and contained no chemical stimulants.• It is not a direct stimulant, like a shot of adrenaline.• Government expenditure, concentrated now on armaments rather than railways as in the late nineteenth century, also remained a major stimulant.• Scalp stimulants can help to revitalise dormant hair follicles by increasing the blood flow to the scalp.