Artificial intelligent assistant

climacterial

climacˈterial, a. (n.) Obs. rare.
  [ad. F. climacteriel (16th c.), f. climacterie (Cotgr.).]
  A. adj. = climacteric; critical.

1643 T. Goodwin Return of Prayers, etc. 137 These [hours] are the most climacteriall, and criticall, and most dangerous.

  B. n. A climacteric year; = climacteric; in quot.? the ‘grand climacteric’ or 63rd year.

1631 R. H. Arraignm. Whole Creature xiv. §i. 231 Who dyed..ere ever they came to their Climacteriall.

Oxford English Dictionary

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