P
Short entries beginning with P that only one encyclopedia carries are gathered on page 1 page 2 page 3 page 4 page 5 page 6 page 7 page 8 page 9 page 10 page 11 page 12 page 13 page 14 page 15 page 16 page 17 page 18 page 19 page 20 page 21 page 22 page 23 page 24 page 25 page 26 page 27 page 28 page 29 page 30 page 31 page 32 page 33 page 34 page 35 page 36 page 37 page 38 page 39 page 40 page 41 page 42 page 43 page 44 page 45 page 46 page 47 page 48 page 49 page 50 page 51 page 52 page 53 page 54 page 55 page 56 page 57 page 58 page 59 page 60 page 61 page 62 page 63 page 64 page 65 page 66 page 67 page 68 page 69 page 70 page 71 page 72 page 73 page 74 page 75 page 76 page 77 page 78 page 79 page 80 page 81 page 82 page 83 page 84 page 85 page 86 page 87 page 88 page 89 page 90 page 91 page 92 page 93 page 94 page 95 page 96 page 97 page 98 page 99 page 100 page 101.
- Pacer
- Pachydermata
- Pacific Railroads
- Packard
- Packfong 2 sources
- Packing House
- Paderewski
- Padua 2 sources
- Page 2 sources
- Paine 2 sources
- Paint
- Painting 2 sources
- Paisley
- Pakhoi
- Palanquin
- Palenque
- Palestine 2 sources
- Paley, William
- Palgrave
- Palingenesy
- Palladino, Eusapia
- Palladium 5 sources
- Pallophotophone
- Palm 2 sources
- Palma
- Palmer
- Palmerston
- Palmistry 2 sources
- Pamirs
- Pan-American Exposition
- Pan-Germanism
- Panama 2 sources
- Panama Canal
- Pandora 3 sources
- Pangolin
- Pankhurst
- Pantheon 3 sources
- Pantograph Engine
- Papaw 2 sources
- Paper 2 sources
- Paper Money
- Paper-parting
- Papyrus
- Papyrus
- Paracelsus 3 sources
- Paradise
- Paradise Lost
- Paraffin 2 sources
- Paraguay 2 sources
- Parallax 2 sources
- Paralysis
- Paramaribo
- Paranoia
- Parasite 2 sources
- Parasitic Plants
- Paraskeva, Saint
- Parchment 2 sources
- Parima
- Paris 4 sources
- Park 2 sources
- Parker
- Parkman, Francis
- Parley
- Parliament 2 sources
- Parma
- Parnell
- Parrot 2 sources
- Parry
- Parsec
- Parsees 2 sources
- Parsons
- Parthenon 2 sources
- Parthia
- Partridge 2 sources
- Pascal
- Pasqually, Martinez de
- Passchendaele
- Passion Play 2 sources
- Passover 2 sources
- Paste
- Pasteur 2 sources
- Patagonia 2 sources
- Patent 2 sources
- Patent Fluxes
- Paterson
- Path, The
- Patmore, Coventry
- Patriotic Societies
- Patroon
- Pattern
- Paul
- Pawnbroker 2 sources
- Payne
- Payne, John Howard
- Pea 2 sources
- Peabody
- Peabody, George
- Peace Movement
- Peach 2 sources
- Peanut 2 sources
- Pear 2 sources
- Pearl 2 sources
- Peary
- Peary, Robert Edwin
- Peat 2 sources
- Pecan 2 sources
- Pedagogue
- Pedee
- Peel
- Peel, Robert
- Peer
- Pegasus 3 sources
- Pekin
- Peking
- Pelagians
- Peleus
- Pelican 2 sources
- Pellagra 2 sources
- Pembroke College
- Pen 2 sources
- Pencil 2 sources
- Pendennis
- Pendulum
- Pendulum 2 sources
- Penelope 3 sources
- Penguin 2 sources
- Penn
- Penn, William
- Pennsylvania 2 sources
- Penny 2 sources
- Penology
- Pension
- Pensions
- Pentateuch 2 sources
- Pentecost
- Peonage 2 sources
- Peony 2 sources
- Pepper 2 sources
- Peppermint 2 sources
- Pepys 2 sources
- Perch 2 sources
- Percy
- Pere Lachaise
- Perfumery
- Pergamus 3 sources
- Pericardium
- Pericles 3 sources
- Perigee
- Period (Term used in chronology)
- Periodical
- Periodicals
- Peritoneum
- Perry
- Persecution
- Persepolis 2 sources
- Perseus 2 sources
- Pershing
- Persia 2 sources
- Persian Gulf
- Perspective
- Perspiration
- Perth
- Peru 2 sources
- Pestalozzi 2 sources
- Petard 2 sources
- Peter
- Peter the Hermit 2 sources
- Peterborough
- Peterhead
- Petition 2 sources
- Petlura
- Petrarch 2 sources
- Petrel 2 sources
- Petrified Forest, The
- Petroleum 3 sources
- Phaethon 2 sources
- Phalanx 2 sources
- Pharisees 2 sources
- Pheasant 2 sources
- Phelps 2 sources
- Phenicia
- Phenology
- Phi Beta Kappa 2 sources
- Phidias 2 sources
- Philadelphia 2 sources
- Philalethes, Eirenæus
- Philip 2 sources
- PHILIP II
- Philip the Good
- Philippic 2 sources
- Philippine Islands
- Philistines 2 sources
- Phillips 2 sources
- Phillips, Wendell
- Philomela 2 sources
- Philosopher's Stone 2 sources
- Philosophy
- Phipps 2 sources
- Phlox 2 sources
- Phocion 2 sources
- Phoenix 3 sources
- Phonograph
- Phosphor-bronze
- Phosphorus 2 sources
- Photoengraving
- Photography 2 sources
- Phototherapy
- Phreno-Mesmerism (or Phrenopathy)
- Phrygian Cap
- Phylactery
- Physical Education
- Physiography 2 sources
- Physiology 2 sources
- Piacenza
- Piano
- Piano
- Piave River
- Piazza Armerina
- Picardy
- Pickering
- Pickling of Metals
- Picts 2 sources
- Pierce 2 sources
- Pigeon
- Pike 2 sources
- Pilgrims
- Pillory 2 sources
- Pilot Balloons
- Pin 2 sources
- Pindar 2 sources
- Pine 2 sources
- Pineapple 2 sources
- Pinion Grinder and Polisher
- Pinocle
- Pinto
- Pipe Line
- Piquet
- Piracy
- Pisa 2 sources
- Pisano
- Piso 2 sources
- Pitcairn Island
- Pitch 2 sources
- Pitcher Plant
- Pitt 2 sources
- Pittsburg 2 sources
- Pittsburgh
- Pius 2 sources
- Pivot Polisher
- Pivoting Chuck
- Pizarro
- Pizarro, Francisco
- Placer Mining
- Plague 2 sources
- Planchette 2 sources
- Planet 2 sources
- Planetoids
- Planets
- Plant Breeding
- Plate 2 sources
- Plating
- Platinum 2 sources
- Plato 3 sources
- Plattsburg Training Camps
- Playfair
- Pleiades 2 sources
- Plimsoll
- Pliny 2 sources
- Plover 2 sources
- Plow 2 sources
- Plum 2 sources
- Plumbing
- Plush 2 sources
- Plutarch 2 sources
- Pluto 3 sources
- Plymouth 2 sources
- Plymouth Colony
- Pneumatic Breakwaters
- Pneumatic Dispatch
- Pneumatic Tools
- Pneumonia 2 sources
- Po
- Poaching
- Poe 2 sources
- Poetry 2 sources
- Pogrom
- Poilu
- Poising the Balance
- Poison
- Poison Gas
- Poison Ivy 2 sources
- Pola
- Poland 2 sources
- Polarization
- Pole
- Polestar
- Polignac
- Poliomyelitis
- Political Economy 2 sources
- Political Science
- Polk 2 sources
- Pollard 2 sources
- Pollock
- Polo 2 sources
- Polo, Marco
- Poltergeist
- Polycrates
- Polynesia 2 sources
- Pomona 3 sources
- Pompadour 2 sources
- Pompeii 2 sources
- Pompey 2 sources
- Ponce De Leon 2 sources
- Pondicherry 2 sources
- Pontiac 2 sources
- Pope
- Pope, Alexander
- Poplar 2 sources
- Popocatepetl
- Poppy 2 sources
- Porcelain 2 sources
- Porcelain Moulding
- Porcupine 2 sources
- Porpoise 2 sources
- Port Arthur 2 sources
- Portable Furnaces
- Portage
- Porter
- Porter, David
- Porter, David Dixon
- Portland 2 sources
- Porto Rico 2 sources
- Portsmouth
- Portugal 2 sources
- Portulaca 2 sources
- Poseidon 2 sources
- Posen
- Post-Impressionism
- Postage Stamps
- Postal Savings Banks
- Postoffice
- Pot Metal 2 sources
- Potash 3 sources
- Potassium 3 sources
- Potato 2 sources
- Potato Beetle
- Potomac 2 sources
- Potsdam 2 sources
- Pottery 2 sources
- Pottery-moulding
- Pound 2 sources
- Praed
- Prague 2 sources
- Prairie Dog 2 sources
- Praxiteles 3 sources
- Prayer
- Precedence 2 sources
- Precession of the Equinoxes
- Premonition
- Presbyterian Church
- Presbyterians
- Prescott
- Prescott, William Hickling
- Presentment
- President
- President Western Reserve University
- Priestley
- Prince Edward Island 2 sources
- Princeton 2 sources
- Princeton University
- Printing 3 sources
- Prior
- Prison
- Prison Reform
- Privet 2 sources
- Procter, Bryan Waller
- Proctor
- Profit Sharing
- Progressive Party
- Prohibition
- Prohibition Party
- Projectiles
- Prometheus 2 sources
- Promissory Note 2 sources
- Proofs
- Prophecy
- Protection 2 sources
- Proteins 2 sources
- Protestant 2 sources
- Proudhon 2 sources
- Prouty
- Provence 2 sources
- Proverb 2 sources
- Providence 2 sources
- Provincetown
- Prune
- Prussia 2 sources
- Psalms 2 sources
- Pseudonym 2 sources
- Psoriasis
- Psyche
- Psychical Research 3 sources
- Psychoanalysis
- Psychological Society, The
- Psychology
- Psychometry
- Ptarmigan 2 sources
- Ptolemaeus
- Ptolemy 2 sources
- Ptomaine 2 sources
- Public Lands
- Public Utilities
- Pueblos
- Puffin 2 sources
- Pugilism
- Pulley
- Pullman, George Mortimer
- Pulmotor
- Pump 2 sources
- Pun 2 sources
- Punch 2 sources
- Puppet
- Puritan 2 sources
- Purrah, The
- Putnam
- Putnam, Israel
- Pygmalion 3 sources
- Pygmy 2 sources
- Pym 2 sources
- Pyramid 2 sources
- Pyrenees 2 sources
- Pyrites 2 sources
- Pyrrhus 3 sources
- Pythagoras 3 sources
- Python 3 sources