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

• go under
• go up
• matted
• matter
• matter of law
• matter to
• matter-of-course
• matter-of-fact
• matter-of-factly
• matter-of-factness
• Matterhorn
• Matteuccia
• Matteuccia struthiopteris
• Matthew
• Matthew Arnold
• Matthew Calbraith Perry
• Matthew Flinders
• Matthew Walker
• Matthew Walker knot
• Matthias Schleiden
• Matthiola
• Matthiola incana
• matting
• mattock
• Mattole