hypertufa

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English[edit]

Etymology[edit]

hyper- +‎ tufa

Noun[edit]

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Wikipedia

hypertufa ‎(uncountable)

  1. An anthropic rock made from aggregates bonded with Portland cement, intended as a substitute for natural tufa.
    • 2007 June 7, Anne Raver, “Above Midtown, a Lilliputian Universe”, in New York Times[1]:
      There are weight restrictions on rooftops and terraces, of course, and fiberglass is a lot lighter than tufa, the limestone rock used in alpine gardens, or the mix of cement, peat and sand that makes up hypertufa, the artificial stone used for troughs.