Artificial intelligent assistant

attenuater

† aˈttenuater, -or Med. Obs.
  [f. as prec. + -er1.]
  = attenuant n.

1684 tr. Bonet's Merc. Compit. iii. 89 Decoctions of Guaiacum and other attenuaters. 1783 C. Bryant Flora Diæt. 99 The plant was in high esteem formerly as an attenuater.

Oxford English Dictionary

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