standard atmosphere

Found in Anh - Anh (Wordnet)

Definition Noun : A unit of pressure : The standard atmosphere is a defined unit of pressure equal to the pressure that will support a column of mercury 760 millimeters high at sea level at a temperature of 0 degrees Celsius. It is used as a reference pressure in scientific and engineering fields. Usage The term "standard atmosphere" is used as a fixed reference point for pressure measurements....