- P ... P.S.1 Contemporary Art Center
- P.V. Sindhu ... Pace, Harry
- Pace, Luigi da ... Pacific languages
- Pacific League ... Packard, Sophia B.
- PackBot ... Padmore, George
- Padova ... Page, Patti
- Page, Regé-Jean ... paid-in capital
- Paidagogos ... pair of virginals
- pair potential function, intermolecular ... Pakistan, history of
- Pakistani Clergy, Assembly of ... Palaeopalaemon
- Palaeopropithecidae ... pale
- Pale ale ... Palermo, Protocol of
- Pales ... Palladis Tamia; Wits Treasury
- palladium ... Palmas
- palmately compound leaf ... palo verde
- Paloc ... Pamyat
- PAN ... Panahi, Jafar
- Panaji ... Pancks
- Pancoast, William ... panegyreis
- panegyric ... Panini
- Panini, Giovanni Paolo ... Pantaléon, Jacques
- Pantaleone family ... panzer
- panzer division ... Papaveraceae
- Papaverales ... Papini, Giovanni
- Papinian ... parabolic microphone
- parabolic orbit ... paraffin oil
- paraffin series ... parallel postulate
- parallel processing ... paranoid personality disorder
- paranoid schizophrenia ... parathormone
- parathyroid adenoma ... parental care
- Parental Guidance ... Paris Agreement under the United Nations Framework on Climate Change
- Paris anarchists ... parish
- parish ... Parker, Mary-Louise
- Parker, Matthew ... Parma
- Parma ... Parque Nacional do Iguaçu
- Parque Nacional Los Glaciares ... Parsons turbine
- Parsons, Alzina Ann ... Parti Progressiste-Conservateur du Canada
- Parti Québécois ... Partido Conservador de Nicaragua
- Partido da Frente Liberal ... Partito Socialista dei Lavoratori Italiani
- Partito Socialista Democratico Italiano ... Pascagoula
- Pascagoula River ... Paspalum scrobiculatum
- Paspalum urvillei ... Passion
- passion ... pastel-manner
- Pasternak, Boris Leonidovich ... Patagonian Andes
- Patagonian conure ... Paterculus, Velleius
- paterfamilias ... patient management
- Patient Number 9 ... Patriot Day
- Patriot for Me, A ... Patterson, Thomas E.
- Patterson, Tracy ... Paul, Ron
- Paul, Ronald Ernest ... Paveway
- Pavi ... Paxton, Warren Kenneth, Jr.
- Paxton, William Archibald ... PBDE
- Pbeemai ... pea weevil
- Peabody ... peacock flounder
- peacock katydid ... Pearl, The
- Pearl, The ... Pechiney
- Pechiney Ugine Kuhlmann SA ... pedestal crater
- pedestal rock ... Peebles, James
- Peebles, Jim ... Pei Chiang
- Pei Chih-li ... Pelamis platurus
- Pelargonium ... Pelleas und Melisande
- Pellegrin, Abbé ... Pembroke, Earl of
- Pembroke, Mary Herbert, countess of ... Pende
- Pendeen ... Peninsula Valdez
- peninsular ... Pennsylvania Morton College
- Pennsylvania Museum and School of Industrial Art ... Pentamerida
- Pentamerista ... People and Uncollected Stories, The
- People Are Talking ... People’s Party (Secular)
- People’s Party (United) ... peppergrass
- peppergrass ... perceptrons
- Perceptrons: An Introduction to Computational Geometry ... Père Ubu
- Père, J. M. Le ... Pérez, Manuel Benítez
- Perez, Rosie ... periaktoi
- periaktos ... periodic random dominance
- periodic table ... Perkins, Maxwell
- Perkins, Maxwell Evarts ... peromelia
- Peromyscus ... Perry Convention
- Perry Mason ... Persian Gulf
- Persian Gulf War ... personal trust
- personal-liberty laws ... Peruvian pepper tree
- Peruvian torch cactus ... PET fibre
- PET scanning ... Peter of Montboissier, Blessed
- Peter of Spain ... Petersson, Olof
- petha ... Petrenko, Viktor
- Petrescu, Cezar ... Petronius Niger, Titus
- Petronius, Gaius ... Pétursson, Hallgrímur
- Pétursson, Hannes ... PFLP
- PFLP–GC ... Phalaenoptilus nuttallii
- phalange ... Pharaoh’s chicken
- Pharaohs ... Phatalung
- Phatthalung ... phenylacetic acid
- phenylalanine ... Philanthus triangulum
- Philaret ... Philip the Tall
- Philip the Tetrarch ... Philips, Obbe
- Philips, Peter ... Philosophaster
- philosophe ... Phineus
- Phintella vittata ... Phoebe
- Phoebe in Wonderland ... phonetic transcription
- phonetic transfer ... phosphorus match
- phosphorus oxide ... photographic zenith tube
- Photographie judiciaire, La ... Phra Naret
- Phra Pathom ... Phylactolaemata
- phylactolaemate ... physical constant
- physical culture ... phytolith
- Phytomastigophorea ... pianoforte
- Pianola ... pichiciego
- Pichilemu ... Picquigny, Treaty of
- Picramnia antidesma ... Pièces de clavecin
- Pieces of a Man ... Piero di Lorenzo
- Piero il Gottoso ... pig iron
- pig laurel ... Pike, Kenneth L.
- Pike, Kenneth Lee ... Pilkington, Francis
- pill ... Pimenta dioica
- Pimenta officinalis ... Pindar River
- Pindar, Peter ... pinguecula
- Pinguicula ... pinocytosis
- piñon nut ... Pioneer
- Pioneer ... Pippin
- Pippin ... pirouette
- pirouette ... Pistacia lentiscus
- Pistacia terebinthus ... Piteşti
- Pitezel, Ben ... Pittsburgh Gazette, The
- Pittsburgh glass ... pk
- Pk antigen ... Plague, The
- plaice ... Planck era
- Planck length ... planography
- Planorbidae ... plaque
- plaque ... plastoquinone
- plastron ... Platian Shield
- Platichthys flesus ... play and pay
- Play Dirty ... pleasure
- Pleasure City ... Plesiosauria
- plesiosauroid ... Plimsoll line
- Plimsoll mark ... plug bayonet
- plug gauge ... Plushchenko, Yevgeny Viktorovich
- Plushenko, Evgeni ... pneumatic pipeline
- pneumatic process ... Pockels effect
- Pockels, F. R. ... Podrecca, Vittorio
- Podrostok ... Poems on Interesting Events in the Reign of King Edward III
- Poems on Miscellaneous Subjects ... Pogo
- Pogo ... Point Park University
- Point Pelee National Park ... Poitiers, Battle of
- Poitiers, Battle of ... polar coordinates
- polar cusp ... polecat
- polecat-ferret ... Polish Academy of Sciences
- Polish Brethren ... political risk analysis
- Political Romance, A ... Pollenza
- pollex ... Poluostrov Yamal
- Polus ... Polydorian
- Polydoúre, Maria ... Polymixiiformes
- Polymixiomorpha ... Polypterus endlicherii
- Polypterus senegalus ... Pomerania
- Pomerania Ulterior ... pond cypress
- pond duck ... Pontevedra
- Pontevedra ... pool, swimming
- Pool, The ... Popieluszko, Jerzy
- popievki ... population
- Population Bomb, The ... Porgy and Bess
- Pori ... Port Cooper
- Port Dalhousie ... Porta do Sertão
- porta hepatis ... Portfolio diversification: What investors need to know
- portfolio investment ... Portrait of a Young Woman
- Portrait of Ambroise Vollard ... Portus Gaditanus
- Portus Magnus ... Posse Comitatus Act
- Possessed ... postcard
- Postcards ... postsecondary education
- poststructuralism ... Potato Eaters, The
- potato family ... Pott, Sir Percivall
- Pottawatomie Massacre ... Poussaint, Alvin Francis
- Pousseur, Henri ... Powell, William Horatio
- Powell, William Ralph ... Powhatan
- Powhatan War ... Prabalingga
- Prabang Buddha ... pragmatism
- pragmatist school of chess ... pranayama
- Prandtauer, Jakob ... Pray You, Sir, Whose Daughter
- Pray, Malvina ... preciosity
- Precious ... Preface to the first edition of the Encyclopædia Britannica
- Prefaces to Shakespeare ... Prem Tinsulanonda
- Premananda Bhatta ... Pres
- Prés, Josquin des ... presidencies in British India: Bombay, Madras, and Bengal
- presidency of the United States of America ... press
- press agency ... prestressed concrete
- Prestupleniye i nakazaniye ... Prevotella histicola
- prey ... price-to-cash-flow (P/CF) ratio
- price-to-earnings (P/E) ratio ... prikaz
- Prilep ... primary productivity
- primary progressive multiple sclerosis ... primitive society
- Primitive Society ... Prince Souphanouvong
- Prince Valiant ... Principes
- Principes de la flûte traversière ... Prionailurus bengalensis
- Prionailurus bengalensis bengalensis ... Pristis zijsron
- Pristoidei ... Privy Council
- privy seal ... problem play
- problem solving ... Procnias
- Procnias alba ... product quality
- product rule ... Profit-sharing plans: Retirement money, not a bonus
- profitability control ... Progressive Party
- Progressive Party ... Prokopjevsk
- Prokopovich, Feofan ... Promising Young Woman
- promissory note ... propelling charge
- Propemptikon Pollionis ... proposition
- Proposition 209 ... Prosopis cineraria
- Prosopis glandulosa ... protection, effective rate of
- protection, equal ... Protić, Stojan
- protist ... proton donor
- proton linac ... Provence, France, 1955
- Provence, Louis-Stanislas-Xavier, comte de ... proximity
- proximity fuse ... Prvni parta
- Prvovenčani, Stefan ... Psammocharidae
- Psammodrilida ... pseudohypertrophic muscular dystrophy
- pseudohypertrophy ... Psilopsida
- Psíloreítis ... psychoanalysis
- Psychoanalysis of Children, The ... psychrophilic organism
- psychwar ... Pterostyrax
- Pterostyrax corymbosus ... pub rock
- Pubballi ... Public Safety, Committee of
- public school ... Pudovkin, Vsevolod
- Pudovkin, Vsevolod Illarionovich ... puff adder
- puff adder ... Pulau Wetar
- Pulcheria ... pulse mode
- Pulse nightclub shooting ... Puncture
- puncture vine ... Puppetoons
- puppetry ... Purigere
- Purim ... Pursat
- purse ... Pussy, King of the Pirates
- pussy-toes ... Puyallup
- Puyguilhem, Antonin-Nompar de Caumont, marquis de ... pygmy glider
- pygmy goby ... Pyralididae
- Pyralis farinalis ... pyromancy
- Pyromania ... pyxie frog
- Pyxis ... PZT
