Artificial intelligent assistant

surtray

surˈtray, v. Obs. rare—1.
  [a. AF. *surtraire, (cf. OF. sourtraire to seduce), used for s(o)ustraire, ad. L. substrahĕre to substract.]
  trans. To draw off, take away, subtract. So surtrete v.

c 1440 Pallad. on Husb. iii. 1097 A skep of palm thenne after to surtray is This wyn. Ibid. iv. 460 Heer & ther the drie awey surtrete. Ibid. x. 208 Surtrete hem first and after multiplie.

Oxford English Dictionary

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