Pax vostrum - Your Peace (Greeting which means that peace be with you)
Peccat in se et alium peccare facit - Sins against himself and causes others to sin (Legal term - Hans-Heinrich - It's about authorship and participation. Indicates that master-mind of a crime should be punished, just like the other person who actually engaged in it)
Peccata minuta - Sins giblets (Misdemeanors - unimportant things for not going to waste time)
Peccatum tacituritatis - Sin of silence
Pectus excavatum - Dented chest (Medidcal term - abnormally where the ribs and sternum grow inward and form a dent in the chest)
Pectus non est pars vehementer provocans ad lasciviam - The chest is not the part that vehemently provokes lust
Pecunia in arboris non crescit - Money does not grow on trees
Pecunia non olet - Money does not stink
Pecunia pecuniam parere non potest - Money can not create money
Pecuniae omnia parent - All things due to money (Titus Lucretius Caro)
Pedes in terra, ad sidera visus - Our feet on the ground and our sights at the stars (Motto of the National University of Tucuman, Argentina)
Pedibus timor addit alas - Fear adds wings to the feet (Terror makes us extremely fast, compared to Mercury, with winged sandals)
Pedicabo ego vos et irrumabo - I will sodomize you and you'll suck my dick (Catullus - Carmen 16 - considered one of the filthiest expressions ever written in Latin)
Pelvis et umbra sumus - We are dust and shadow
Penitentiam agite - Do penance
Penitus toto divisos orbe Britannos - Deeply divided from the whole world are the British (Virgil: Eclogue I, 67)
Per accidens - By accident (Philosophical term used in logic - By external force - Compare with per se)
Per acclamationem seu inspirationem - By acclamation or inspiration (One of the three modes of election of the Roman Pontiff, now abolished)
Per annum - Per year
Per Ardua ad Astra - Through Difficulty to the Stars ( Motto of the Royal Air Force File - Thank you: Alasdair Rankin )
Per Capita - Per head
Per centum - Percent
Per compromissum - By undertaking (One of the three modes of election of the Roman Pontiff, abolished in the present)
Per crucem ad lucem - In light of the cross (Motto of Don Manuel Perez Rodriguez)