- p ... P.S.1 Contemporary Art Center
- P/51 rifle ... Pacetti, Camillo
- Pach, Walter ... Pacific Northwest Ballet
- Pacific Northwest Indian ... packing fraction
- packing proximity ... Padus
- Padzi ... Paget’s disease
- Paget, Sir James, 1st Baronet ... Paine, John Knowles
- Paine, Robert Treat ... Paisley shawl
- Paisley, Brad ... Pala d’Oro
- Pala Dynasty ... Palana
- Palangka Raya ... Paleo-Asiatic
- Paleo-Asiatic languages ... Pali Text Society
- Palice of Honour, The ... Palm Bay
- Palm Beach ... Palmer, Nathaniel Brown
- Palmer, Patrick ... Pamela in her Exalted Condition
- Pamela, A Comedy ... Pan troglodytes ellioti
- Pan troglodytes paniscus ... Panax ginseng
- Panax quinquefolius ... pandeiro
- pandeism ... Pangnirtung
- pangolin ... Pannotia
- pannus ... Panthera tigris tigris
- Panthera tigris virgata ... papal council
- papal diadem ... Paphos
- PAPI ... para
- para adumma ... paradise, bird of
- paradise, grains of ... Paralichthodidae
- Paralichthyidae ... Paran
- Paraná ... parasitoidism
- parasitology ... Pareja, Juan de
- Parement de Narbonne ... Parima Mountains
- Pariñas ... Paris, Siege of
- Paris, Texas ... Parker, Eugene
- Parker, Francis ... Parliamentary Assembly
- parliamentary commissioner ... parotid gland
- parotid salivary gland ... Parson Russell Terrier
- Parson Weems ... Parti pris
- Parti Progressiste-Conservateur du Canada ... Partido Conservador de Nicaragua
- Partido da Frente Liberal ... Partito Socialista Unita
- Partiya Karkeran Kurdistan ... pascal
- pascal second per cubic metre ... Pasqualis, Martinez
- pasqueflower ... Passion du Christ
- Passion du Palatinus ... Pasteurella multocida
- Pasteurella pestis ... Patala
- Pāṭaliputra ... Paterson
- Paterson Inlet ... patio
- patio process ... Patriotic School of Quebec
- Patriotic Song, The ... Patty Berg Award
- Pattypuffs and Thinifers ... Pauline: A Fragment of a Confession
- Pauling, Linus ... Pavlova, Anna
- Pavlova, Anna Pavlovna ... Payne’s Landing, Treaty of
- Payne, Alexander ... PCR
- PCRM ... peace research
- Peace River ... peanut
- peanut butter ... peasant society
- Peasant Wedding ... pectoralis minor
- pectoralis muscle ... Pedrera, La
- pedrero ... Pegasus
- Pegasus Bridge ... Peking
- Peking duck ... Pelican Brief, The
- pelican eel ... Peltonen, Vihtori
- Peltzer, Otto ... Penates
- Pénaud Planophore ... Pénicaud, Jean, II
- Pénicaud, Nardon ... Pennisetum americanum
- Pennisetum clandestinum ... pensionary
- Pensions and Savings, Bank for ... penwiper plant
- Penwith ... People’s National Movement
- People’s National Party ... pepper-shrike
- PepperBall ... Percé
- Perce-Oreille du Luxembourg, Le ... Père Castor series
- Père David’s deer ... Pérez Molina, Otto
- Pérez Rigal, Atanasio ... Peri, Jacopo
- Péri, La ... periodic law
- periodic motion ... Perkins, Marlin
- Perkins, Maxwell ... Peromyscus
- Peromyscus gossypinus ... Perry Memorial Arch
- Perry Mesa Tradition ... Persian lilac
- Persian lime ... personalized medicine
- personhood ... PES
- pes ... Petaurista
- Petaurus breviceps ... Peter the Czar
- Peter the Great ... Petit porcelain
- Petit Prince, Le ... Petrochelidon pyrrhonota
- petrochemical ... Petrovsky Palace
- Petrozavodsk ... Pew, Joseph Newton, Jr.
- Pew, Joseph Newton, Sr. ... Phacelia campanularia
- Phacelia whitlavia ... Phan Chau Trinh
- Phan Chu Trinh ... pharyngeal tonsils
- pharyngealization ... Phelsuma
- Pheme ... Philadelphia
- Philadelphia ... Philikí Etaireía
- Philinoglossacea ... Philippi, Battle of
- Philippians, Letter of Paul to the ... Phillpots-Page, Ellen
- Phillpotts, Eden ... Philosophy and the Scientific Image of Man
- Philosophy as Rigorous Science ... Pho language
- Pho-lha ... Phoenix Zoo
- Phoenix, Joaquin ... phosphine
- phosphite ... photodiode
- photodisintegration ... Photoshop
- Photoshop CS ... phthisis
- Phu Chaik ... Physalia
- Physalia physalis ... Physiologus
- physiology ... Piano Concerto No. 2 in C Minor, Op. 18
- Piano Concerto No. 21 in C Major, K 467 ... Piccolo mondo antico
- Piccolo San Bernardo, Colle del ... Pickup on South Street
- Pickwick Papers, The ... Pidgin Motu
- pidgin-creole ... Pierce, William Luther
- Pierce-Arrow ... Pietro di Candia
- Pietro Martire Vermigli ... Pik Pobedy
- Pik Revolyutsii ... Pilgrims’ Way
- pili nut ... pilus
- Piluzhena ... Pinctada fucata
- Pinctada maxima ... Ping-Pong
- Ping-Pong diplomacy ... Pino Suárez, José Mariá
- Pinocchio ... pioglitazone
- Piola-Kirchhoff stress ... Pippi Långstrump
- Pippi Longstocking ... piroplasmosis
- pirouette ... Pistacia lentiscus
- Pistacia terebinthus ... Pitfall
- pith ... Pittsburgh Penguins
- Pittsburgh Pipers ... PKI
- PKK ... Plaideurs, Les
- plain ... Planck’s constant
- Planck’s law ... Plans, Elevations, Sections and Details of the Alhambra
- plant ... plasma
- plasma arc gasification ... Platalea alba
- Platalea flavipes ... platinum group
- platinum resistance thermometer ... Player, Gary Jim
- Player, The ... Plecoglossus altivelis
- Plecoptera ... pleurisy root
- pleuritis ... PLM
- PLN ... plumbojarosite
- plume ... Pluvialis dominica
- Pluvianus aegyptius ... PNI
- Pnin ... podesta
- Podesta, John ... Poem Scroll with Deer
- Poem to his Majesty, A ... poète maudit
- Poètes maudits, Les ... Poincaré section
- Poincaré upper half-plane model ... Poiré, Jean-Gustave
- Poire, La ... Pol, Santiago
- Pola ... polarized region
- polarizer ... Police Prefecture
- Police Service of Northern Ireland ... political cartoon
- political change ... Polkinghorne, John Charlton
- poll ... polonaise
- polonaise ... Polychelidae
- polychlorinated biphenyl ... polyhalite
- polyhedron ... Polyphonia
- polyphonic chanson ... Pomacanthus arcuatus
- Pomacanthus paru ... Pompidou Centre
- Pompidou Centre—Metz ... Pont-Aven school
- Pont-l’Évêque ... PONY Baseball, Inc.
- Pony Express ... Popé
- pope ... Popular Movement for the Liberation of Angola
- Popular Movement of the Revolution ... Pordenone
- Pordenone ... Port Arthur
- Port Arthur Massacre ... Port-au-Prince
- Port-aux-Français ... Porter, Quincy
- Porter, Rodney Robert ... portrait miniature
- Portrait of a Condottiere ... Portus
- portus ... Posse Comitatus Act
- Possessed ... postcaval vein
- postcholecystectomy syndrome ... Postures
- postvelar consonant ... Potchefstroom
- Potemkin ... Potter, Hank
- Potter, Harry ... povada
- Považská Bystrica ... Power and the Glory, The
- Power and the Glory, The ... Poyang, Lake
- Poyarkov, Vasily ... Practical Criticism
- Practical Education ... Praha
- prahasana ... prasmanan
- Prasopora ... Pražský hrad
- PRC ... Precisionism
- preclearance ... preganglionic fibre
- preganglionic neuron ... premolar
- premolt ... Prescott, Dak
- Prescott, Edward C. ... presidential election of 1988
- presidential election of 1992 ... pressure receptor
- pressure remanent magnetization ... pretzel
- Pretzel Logic ... Price, Ellen
- Price, Emily ... Priestley, John Boynton
- Priestley, Joseph ... primary mineral
- primary mirror ... primitive Christian art
- primitive church ... Prince of Wales Island
- Prince of Wales Island ... principall Navigations, Voiages and Discoveries of the English Nation, The
- Principat d’Andorra ... Prinze, Freddie, Jr.
- Prinzenraub ... Pristiphora erichsonii
- Pristis ... Privy Council
- privy seal ... Problem with Jon Stewart, The
- problem-oriented language ... Procnias tricarunculata
- Procol Harum ... production function
- production line ... progenesis
- progeny selection ... Progressive Republican Party
- progressive resistance ... Prolemur simus
- prolepsis ... prompt radiation
- Promptorium parvulorum sive clericorum ... property
- property dualism ... proptosis
- propulsion ... prostaglandin
- prostagma ... protein S
- protein synthesis ... Proto-Semitic language
- Proto-Sinaitic inscriptions ... Protopopov, Oleg
- Protopopov, Oleg Alekseyevich ... Providencia, San Andrés y
- Providenciales ... Prudential Building
- Prudential Friendly Society ... Prytaneis of Eresus
- prytaneum ... Psettodidae
- Psettodoidei ... pseudopod
- pseudopod movement ... Psoa maculata
- psocid ... psychological projection
- Psychological Study of Religion, A ... Pteridaceae
- pteridine ... PTL Club
- PTM ... public education
- Public Enemies ... público, El
- Publikumsbeschimpfung ... Puerto Aisén
- Puerto Armuelles ... Pugo, Boris
- Pugwash Conferences ... pulmonary edema
- pulmonary embolism ... Pumori Glacier
- pump ... punta
- Punta Arenas ... Pure Land Buddhism
- Pure Land Sutra ... purple mangosteen
- purple martin ... pusher machine
- Pushing Tin ... Putto with Dolphin
- putty ... pyelonephritis
- Pyeongchang 2018 Winter Olympic Games ... Pynchon, Thomas
- Pynson, Richard ... pyroclastic cone
- pyroclastic flow ... Pythium
- Pythium insidiosum ... PZT
