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1. Oxford American Dictionary

   stimulant

   • IPA[ˈstimyələnt]

   美式

   • n.
     a substance that raises levels of physiological or nervous activity in the body；something that increases activity, interest, or enthusiasm in a specified field
   • adj.
     raising levels of physiological or nervous activity in the body

   • noun: stimulant, plural noun: stimulants

2. • 釋義

   n.

   名詞

   • 1. a substance that raises levels of physiological or nervous activity in the body it is a stimulant that has a direct effect on the nervous system a scalp stimulant 同義詞 tonic, restorative, reviver, energizer, refresher, ... 更多antidepressant, informalpep pill, upper, pick-me-up, bracer, technicalexcitant, analeptic反義詞 sedative, downer
   • ▪ something that increases activity, interest, or enthusiasm in a specified field population growth is a major stimulant to industrial development 同義詞 stimulus, incentive, encouragement, impetus, inducement, ... 更多fillip, boost, spur, prompt, prod, jog, provocation, goad, incitement, informalshot in the arm, kick up the backside反義詞 deterrent

   adj.

   形容詞

   • 1. raising levels of physiological or nervous activity in the body caffeine has stimulant effects on the heart
3. • 更多解釋

   stimulant

   • IPA[ˈstɪmjʊlənt]

   英式

   • n.
     a substance that raises levels of physiological or nervous activity in the body: it is a stimulant that has a direct effect on the nervous system a scalp stimulant
   • adj.
     raising levels of physiological or nervous activity in the body: caffeine has stimulant effects on the heart

   Oxford Dictionary