STP 
(ĕtēpē)
(ĕtēpē)n.
Standard temperature (273.15K or 0°C) and pressure (1 atmosphere or 105 pascals), used chiefly in measurements of gases.
- psychological moment
- psychological operation
- psychological warfare
- psychologism
- psychologist
- psychologize
- psychologizer
- psychology
- psychometric
- psychometrical
- psychometrically
- psychometrician
- psychometrics
- psychometrist
- psychometry
- psychomotor
- psychoneuroimmunology
- psychoneurosis
- psychoneurotic
- psychopath
- psychopathic
- psychopathically
- psychopathologic
- psychopathological
- psychopathologist