| The Columbia Encyclopedia, Sixth Edition. 2001-07. |
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| Pitcher, Molly to plutonium |
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| Pitcher, Molly |
| pitcher plant |
| Pitch Lake |
| pitch pine |
Pite ti |
| pith |
| Pithecanthropus erectus |
| Pithom |
| Pithon |
| Pitman, Sir Isaac |
| Pitoëff, Georges |
| pitot static system |
| Pitt, William, 1708–78, 1st earl of Chatham |
| Pitt, William, 1759–1806, British statesman |
| Pitt, Fort |
| pitta |
| Pittacus |
| Pitt Island |
| Pittsburg |
| Pittsburgh |
| Pittsburgh, University of |
| Pittsburgh Symphony Orchestra |
| Pittsfield |
| Pittston |
| pituitary gland |
| pit viper |
| Pitzer College |
| Piura |
| Pius II |
| Pius IV |
| Pius V, Saint |
| Pius VI |
| Pius VII |
| Pius IX |
| Pius X, Saint |
| Pius XI |
| Pius XII |
| Piute |
| pixie |
| Pi y Margall, Francisco |
| Pizarro, Francisco |
| Pizarro, Gonzalo |
| Pizarro, Hernando |
| Pizarro, Juan |
| Pizzetti, Ildebrando |
| pizzicato |
| PKU |
| Place, Francis |
| placebo |
| placenta |
| Placentia, town, Canada |
| Placentia, city, California |
| Placentia Bay |
| placer mining |
| Placetas |
| Placid, Lake |
| Placidia |
| plage |
| plagioclase feldspar |
| plague |
| plagues of Egypt |
| plaice |
| plaid |
| Plain, the |
| plain |
| plainchant |
| Plainfield |
| Plain of Jars |
| Plains of Abraham |
| plainsong |
| Plainview |
| Plainville |
| planarian |
| Planck, Max |
| Planck’s constant |
| plane |
| planet |
| planetarium |
| planetary nebula |
| planetary science |
| planetary system |
| planetesimal theory |
| planetoid |
| plane tree |
| plankton |
| Plano |
| plant |
| Plantagenet |
| plantain |
| plantain lily |
| Plantation |
| plant breeding |
| Plant City |
| planter |
| Plantin, Christophe |
| plant louse |
| plant pathology |
| Planudes Maximus |
| plasma |
| plasma, biological |
| plasmapheresis |
| plasmodium |
| Plassey |
| plaster casting |
| plastering |
| plaster of Paris |
| plastic |
| plastic surgery |
| Plata, Río de la |
| Plataea |
| plate |
| Plate, River |
| plateau |
| platelet |
| Platen, August Graf von |
| plateresque |
| plate tectonics |
| platform tennis |
| Plath, Sylvia |
| plating |
| platinite |
| platinum |
| Plato |
| Platonic Solids |
| Platonov, Andrei |
| Platt, Charles Adams |
| Platt, Orville Hitchcock |
| Platt, Thomas Collier |
| Platt Amendment |
| Plattdeutsch |
| Platte |
| Plattsburgh |
| Platyhelminthes |
| platypus |
| Plauen |
| Plautus |
| player piano |
| Playfair, John |
| Playfair, Sir Nigel |
| playing cards |
| Play Ku |
| Plaza Lasso, Galo |
| plea bargaining |
| pleadings |
| Pleasant Hill |
| Pleasanton |
| Pleasantville |
| Pleasonton, Alfred |
| Pleasure Ridge Park |
| plebeians |
| plebiscite |
| plebs |
| Pledge of Allegiance |
| Plehve, Vyacheslav Konstantinovich |
| Pleiad |
| Pleiades, in astronomy |
| Pleiades, in Greek mythology |
| Pleiku |
| plein-air |
| Pleistocene epoch |
| Plekhanov, Georgi Valentinovich |
| Pleshcheyevo, Lake |
| Plesianthropus |
| Plesiosaurus |
| Plessy v. Ferguson |
| pleura |
| pleurisy |
| pleurisy root |
| Pleven, René |
| Pleven |
| Plevna |
| Plexiglas |
| Plimer, Andrew |
| Plimsoll, Samuel |
| Plinlimon |
| Pliny the Elder |
| Pliocene epoch |
| Plisetskaya, Maya |
P ock |
| Ploieti |
| Plombières |
| Plotinus |
| plough |
| Plovdiv |
| plover |
| plow |
| Plücker, Julius |
| Plum, city, Pennsylvania |
| plum, in botany |
| plumage |
| Plumb, Sir John Harold |
| plumbago |
| plumbing |
| Plunket, Saint Oliver |
| Plunkett, Sir Horace Curzon |
| pluralism |
| Plutarch |
| Pluto, in astronomy |
| Pluto, in Greek religion and mythology |
| plutonium |
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| | | The Columbia Encyclopedia, Sixth Edition. Copyright © 2007 Columbia University Press. |
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