standard pressure standard poodle • standard procedure · · · Info · Definitions · Synonyms · Characters · · standard pressure · · Text Common · · Latin · · Scripts 17 · · Length 4 · · Syllables Definitions · · · (noun) a unit of pressure: the pressure that will support a column of mercury 760 mm high at sea level and 0 degrees centigrade. Synonyms: standard atmosphere, atmosphere, atm, standard pressure. · · Noun Definition 1 Synonyms · · · standard atmosphere · · Synonym 1 atmosphere · · Synonym 2 atm · · Synonym 3 Characters · · space U+0020 a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 n latin small letter n U+006E p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075