S.T.P.

 I. (noun) 

Sense 1

Meaning:

Standard temperature and pressure

Synonyms:

s.t.p.; STP

Classified under:

Nouns denoting quantities and units of measure

Hypernyms ("s.t.p." is a kind of...):

atm; atmosphere; standard atmosphere; standard pressure (a unit of pressure: the pressure that will support a column of mercury 760 mm high at sea level and 0 degrees centigrade)

standard temperature (exactly zero degrees centigrade)

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