Artificial intelligent assistant

vertant

ˈvertant, a. Her.
  [a. F. vertant, = L. vertent-, vertens, pres. pple. of vertĕre: see vert v.1]
  Bending, curving.

1688 R. Holme Armoury ii. 473/1 He beareth Argent, eight Leaves, the Stalks conjoyned and contrary bowed... But the most compendious, is to blazon them conjoyn'd dorse endorse: though good Artists will say, conjoyned and vertant to the Dextre and Sinister. c 1828 Berry Encycl. Her. I. Gloss., Vertant and Revertant, or Verted and Reverted, the same as flexed and reflexed, or bowed embowed, that is formed like the letter S reverted. [Hence in later Dicts.]

Oxford English Dictionary

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