[ik-sahyt-nt, ek-si-tuh nt]
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  1. Physiology. something that excites; a stimulant.

Origin of excitant

1600–10; < Latin excitant- (stem of excitāns), present participle of excitāre. See excite, -ant
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for excitant


adjective Also: excitative (ɪkˈsaɪtətɪv), excitatory (ɪkˈsaɪtətərɪ, -trɪ)
  1. able to excite or stimulate
  1. something, such as a drug or other agent, able to excite; stimulant
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012