1. Per procurationem: by proxy (e.g. when signing off a letter on someone else's behalf) 
2. Per person 
3. Pages

1. A direction in music; to be played very softly
   - pianissimo, very softly

Encyclopedia: Pp

• auriscope
• aurist
• aurochs
• aurora
• aurora australis
• aurora borealis
• auroral
• aurorean
• auroscope
• aurous
• aurum
• Auschwitz
• auscultate
• auscultation
• auscultatory
• auspex
• auspicate
• auspice
• auspices
• auspicious
• auspiciously
• auspiciousness
• Aussie
• Austen
• austenite