English

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Etymology

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From Latin lavātōrius +‎ -al.[1] By surface analysis, lavatory +‎ -al.

Adjective

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lavatorial (comparative more lavatorial, superlative most lavatorial)

  1. Of or pertaining to a lavatory
    • 2021 December 29, Conrad Landin, “Glasgow Subway: a city institution”, in RAIL, number 947, page 45:
      The station interiors were also suffering. "The universal lavatorial glazed tiling is dirty and cracked, the paint is peeling, and there is a general air of decay," Guardian journalist Charles Cook wrote in a 1974 feature. But as Cook himself discovered, this decrepitness disguised the positives of Underground travel.
  2. scatological
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References

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  1. ^ lavatorial, adj.”, in OED Online  , Oxford, Oxfordshire: Oxford University Press, launched 2000.