Artificial intelligent assistant

hydrostatical

hydroˈstatical, a.
  [f. as prec. + -al1: cf. statical.]
  Dealing with or referring to hydrostatics; also = prec.

1666 Boyle (title) Hydrostatical Paradoxes. 1704 J. Harris Lex. Techn. s.v., Such useful Propositions as those given us by Hydrostatical Writers. 1796 Hutton Math. Dict. s.v., Another machine which may be substituted instead of this common Hydrostatical bellows. 1833 N. Arnott Physics (ed. 5) I. 557 The hydrostatical truth, that pressure in a fluid operates equally in all directions.

Oxford English Dictionary

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