mmH2O

Translingual

Etymology

mm (“millimeter”) +‎ H2O (“water”)

Symbol

mmH2O

  1. Abbreviation of millimeter of water. A unit of pressure, the pressure exerted by a column of water of 1 mm in height at 4 °C (in standard conditions, the temperature at which water has maximum density, in standard Earth gravity)

Synonyms
  • mm.g
  • mm.w.g.
  • mm.wc

See also
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