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pediluvium

pediluvium
  (pɛdɪˈl(j)uːvɪəm)
  Pl. -ia. Also in anglicized form pediluvy.
  [med. or mod.L., f. pēs, pedi- foot + -luvium (in comp.) washing, f. lu-ĕre to wash.]
  A foot-bath; a washing of feet. Also attrib.

1693 tr. Blanchard's Phys. Dict. (ed. 2), Pediluvium, a sort of Bath for the Feet. 1782 W. Heberden Comm. xviii. (1806) 101 Warm pediluvia. 1828 Webster, Pediluvy. 1865 A. Strickland Queens Eng. I. 90 Perhaps he [King David I] was conscious of his want of skill at a pediluvium party; or..had seen too much of such scenes during the life of his pious mother Queen Margaret. 1898 P. Manson Trop. Diseases xxxvii. 140 Hot mustard pediluvia..are in constant use.

  Hence pediˈluvial a., of or pertaining to the washing of feet, or to a foot-bath; in quot. n. pl. ceremonies connected with the washing of feet (as a religious act).

1828 Landor Imag. Conv., Leo XII & Gigi, After which holy function, go and prepare for the pediluvials.

Oxford English Dictionary

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