| 項目 |
| P |
| P タイル［plastic tile］ |
| P 点［P-point］ |
| P 波［P-wave; primary wave］ |
| P-3C |
| P5［Permanent five］ |
| p |
| p. |
| p 形半導体［positive hole］ |
| PA1［public acceptance］ |
| PA2［public-address system］ |
| PA3［public affairs］ |
| PA4［Republic of Panama］ |
| Pa1［pascal］ |
| Pa2［protactinium］ |
| PABA（パバ）［para-aminobenzoic acid］ |
| PABX［private automatic branch exchange］ |
| PAC1［Pan-American Congress］ |
| PAC2［Political Action Committee］ |
| PAC3［pollution abatement and control industry］ |
| PACS［picture archiving and communication system for medical application］ |
| PAK［Islamic Republic of Pakistan］ |
| PAL［phase alternation by line］ |
| PAL プラス［Phase Alternate Line］ |
| PAM1（パム）［pulse amplitude modulation］ |
| PAM2（パム）［2-pyridine aldoxime methiodide］ |
| PAN1［(ス) Partido Accion Nacional］ |
| PAN2（パン）［peroxyacetyl nitrate］ |
| PAN3［Pesticide Action Network International］ |
| PAN4［Republic of Panama］ |
| P & F［point and figure］ |
| PANE［People Against Nuclear Energy］ |
| PAP1［People's Action Party］ |
| PAP2［positive adjustment policy］ |
| PAP3［primary atypical pneumonia］ |
| Pap テスト［Papanicolaou test］ |
| PAR［Republic of Paraguay］ |
| PARC［Palo Alto Research Center］ |
| PARCOR（パーコール）方式［partial auto-correlation］ |
| PAS（パス）［para-aminosalicylic acid］ |
| PASC［Precision Adaptive Subband Coding］ |
| PASCAL（パスカル）［(フ) Programme applique a la selection et a la compilation automatique de la litterature］ |
| pat.［patent（ed）］ |
| PB1［police box］ |
| PB2［private banking］ |
| PB3［private brand］ |
| Pb［(ラ) Plumbum］ |
| PBI［West Palm Beach］ |
| PBR［price book-value ratio］ |
| PBT［polybutylene terephthalate］ |
| PBX［private branch exchange］ |
| PC1［personal computer］ |
| PC2［political correctness］ |
| PC3［polycarbonate］ |
| PC4［precast concrete］ |
| PC5［prepaid card］ |
| PC6［prestressed concrete］ |
| PC7［primary care］ |
| PC8［programmable controller］ |
| PC カード［personal computer card］ |
| pc［parsec］ |
| p.c.［per cent］ |
| PCB［polychlorinated biphenyl］ |
| PCC［pure car carrier］ |
| PCCV［prestressed concrete containment vessel］ |
| PCDF［polychlorinated dibenzofuran］ |
| PCE［personal consumption expenditure］ |
| P.C.F.［(フ) Parti communiste francais］ |
| PCFR［price cash flow ratio］ |
| PCM［pulse code modulation］ |
| PCM 放送［pulse code modulation broadcasting］ |
| PCN［personal communication network］ |
| PCP［pentachlorophenol］ |
| PCR1［polymerase chain reaction］ |
| PCR2［post-consumer-recycled］ |
| PCT1［Patent Cooperation Treaty］ |
| PCT2［polychlorinated triphenyl］ |
| PD1［peritoneal dialysis］ |
| PD2［physical distribution］ |
| PD3［producer］ |
| PD4［program director］ |
| Pd［palladium］ |
| PDA［personal digital assistance］ |
| PDC［personal digital cellular］ |
| PDD［Partnership for Democracy and Development］ |
| PDF［portable document format］ |
| .pdf［portable document format］ |
| PDI［(インドネシア) Partai Democrasi Indonesia］ |
| PDL［page description language］ |
| PDP［plasma display panel］ |
| PDS1［(ド) Partei Demokratischen Sozialismus］ |
| PDS2［(イ) Partito Democratico della Sinistra］ |
| PDS3［public domain software］ |
| PDVAN［physical distribution value added network］ |
| PDX［Portland］ |
| PE［Republic of Peru］ |
| PECC（ペック）［Pacific Economic Cooperation Council］ |
| PEK［Peking］ |
| PEN［Penang］ |
| P.E.N.（ペン）［International Association of Poets, Playwrights, Editors, Essayists and Novelists］ |
| PER1［Perth］ |
| PER2［price-earnings ratio］ |
| PER3［Republic of Peru］ |
| Perl（パール）［Pathological Eclectic Rubbish Lister］ |
| PET1（ペット）［polyethylene terephthalate］ |
| PET2［positron emission tomography］ |
| PET ボトル［PET bottle］ |
| PETA（ペタ）［People for the Ethical Treatment of Animals］ |
| PEX 運賃［Special Excursion Fare］ |
| PF［French Polynesia］ |
| PFI［private finance initiative］ |
| PFLP［Popular Front for the Liberation of Palestine］ |
| PFP［Partnership for Peace］ |
| PG1［parental guidance suggested］ |
| PG2［penalty goal］ |
| PG3［propane gas］ |
| PG4［prostaglandin］ |
| PG-12［parental guidance-12］ |
| PGA［Professional Golfers' Association］ |
| PGNUNS［Provisional Government of National Union and National Salvation］ |
| PGP［Pretty Good Privacy］ |
| PGR［psychogalvanic response］ |
| PH1［pinch hitter］ |
| PH2［Republic of the Philippines］ |
| pH［(ド) Potenz H］ |
| ph［photo］ |
| PHB［photochemical hole burning］ |
| PHC［primary health care］ |
| Ph.D.［(ラ) Philosophiae Doctor］ |
| PHI［Republic of the Philippines］ |
| PHL［Philadelphia］ |
| PHS1［personal handyphone system］ |
| PHS2［Public Health Service］ |
| PHX［Phoenix］ |
| PI 方式［public involvement］ |
| PIAFS （ピアフ）［PHS Internet Access Forum Standard］ |
| PIC［Pacific Islands Center］ |
| PICS［platform for Internet content selection］ |
| .pict［picture］ |
| PIE 症候群［pulmonary infiltration with eosinophilia syndrome］ |
| PIM［personal information manager］ |
| PK1［Islamic Republic of Pakistan］ |
| PK2［Pakistan International Airlines］ |
| PK3［penalty kick］ |
| PK4［psychokinesis］ |
| PKF［Peace-Keeping Forces］ |
| PKO1［Peace-Keeping Operations］ |
| PKO2［price keeping operation］ |
| PKU［phenylketonuria］ |
| PL1［product liability insurance］ |
| PL2［Republic of Poland］ |
| P/L［profit and loss statement］ |
| PL/1［programming language 1］ |
| PL 教団［(和) Perfect Liberty］ |
| PL 法［product liability］ |
| pl.［plural］ |
| PLA1［Palestine Liberation Army］ |
| PLA2［People's Liberation Army］ |
| PLA3［programmable logic array］ |
| PLC［Public Limited Company］ |
| PLD［programmable logic device］ |
| PLE［Palestine］ |
| PLI［people's life indicators］ |
| PLO［Palestine Liberation Organization］ |
| PLP［pay later plan］ |
| PM1［particulate matter］ |
| PM2［phase modulation］ |
| PM3［product manager］ |
| PM4［St.Pierre and Miquelon］ |
| P.M., p.m.1［(ラ) post meridiem］午後。→A.M. |
| P.M.2［prime minister］ |
| Pm［promethium］ |
| PMD［progressive muscular dystrophy］ |
| PML［Pakistan Muslim League］ |
| PMS［post-marketing surveillance］ |
| PN1［periarteritis nodosa］ |
| PN2［Pitcairn］ |
| p-n 接合［positive-negative junction］ |
| PNC1［Palestine National Council］ |
| PNC2［Power Reactor and Nuclear Fuel Development Corporation］ |
| PNF［Proprioceptive neuromuscular facilitation］ |
| PNG［Papua New Guinea］ |
| PNL［perceived noise level］ |
| PO［post office］ |
| P.O.［postal order］ |
| Po［polonium］ |
| POB［post-office box］ |
| POD［pay on delivery］ |
| P.O.D.［Pocket Oxford Dictionary］ |
| POI［point of interface］ |
| POL［Republic of Poland］ |
| POM［polyoxymethylene］ |
| POP1［point-of-production］ |
| POP2（ポップ）［point-of-purchase］ |
| POP3（ポップ）［post office protocol］ |
| POP4［printing-out paper］ |
| POP（ポップ）広告［point-of-purchase advertising］ |
| POR［Portuguese Republic］ |
| POS（ポス）［point-of-sale］ |
| POS（ポス）広告［point-of-sale advertising］ |
| POS（ポス）端末［point-of-sale terminal］ |
| POSSLQ［person of the opposite sex sharing living quarters］ |
| POW［prisoner of war］ |
| PP1［physical protection］ |
| PP2［pole position］ |
| PP3［polypropylene］ |
| PP4［producer's price］ |
| PP 加工［permanent press finish］ |
| PP 原則［polluter pays principle］ |
| PP 広告［point-of-purchase advertising］ |
| pp.［pages］ |
| ppb［parts per billion］ |
| PPC［plain paper copier］ |
| PPD［purified protein derivative of tuberculin］ |
| PPH［primary pulmonary hypertension］ |
| pphm［parts per hundred million］ |
| PPM1［product portfolio management］ |
| PPM2［pulse phase modulation］ |
| ppm［parts per million］ |
| ppm.［pulse per minute］ |
| PPO［polyphenylene oxide］ |
| PPP1［Pakistan People's Party］ |
| PPP2［point-to-point protocol］ |
| PPP3［polluter pays principle］ |
| PPP4［purchasing power parity］ |
| PPS［polyphenylene sulfide］ |
| PPT［Papeete］ |
| ppt［parts per trillion］ |
| PPV［pay-per-view］ |
| PR1［Philippine Airlines］ |
| PR2［ply rating］ |
| PR3［public relations］ |
| PR4［Puerto Rico］ |
| Pr［(ド) Praseodym］ |
| PRI1［(ス) Partido Revolucionario Institucional］ |
| PRI2［(イ) Partito Repubblicano Italiano］ |
| PRIO（プリオ）［International Peace Research Institute, Oslo］ |
| PRISM（プリズム）［Private Sector Multi Evaluation System］ |
| PRK［Democratic People's Republic of Korea］ |
| Prof.［professor］ |
| PROLOG（プロログ）［Programming in Logic］ |
| PROM［programmable ROM］ |
| PROMETHEUS［Program of European Transport System with Highest Efficiency and Unprecedented Safety］ |
| PRP1［performance-related pay］ |
| PRP2［profit-related pay］ |
| PRT［personal rapid transit］ |
| PRTR［pollutant release and transfer register］ |
| PS1［payload specialist］ |
| PS2［(ド) Pferdestarke］ |
| P.S.［postscript］ |
| PS コンクリート［prestressed concrete］ |
| PS 版［presensitized plate］ |
| PS 方式［production-sharing system］ |
| PSA［probabilistic safety assessment］ |
| PSAC［President's Science Advisory Committee］ |
| PSC1［Polar Stratospheric Clouds］ |
| PSC2［prestressed concrete］ |
| PSD［psycho-somatic disease］ |
| PSDI［(イ) Partito Socialista Democratico Italiano］ |
| PSE［producer subsidy equivalent］ |
| PSI［(イ) Partito Socialista Italiano］ |
| P.S.O.E.［(ス) Partido Socialista Obrero Espanol］ |
| PSP テスト［phenolsulfonphthalein test］ |
| PSS［progressive systemic sclerosis］ |
| PST［Pacific Standard Time］ |
| P.S.U.［(フ) Parti socialiste unifie］ |
| PSW1［psychiatric social work］ |
| PSW2［psychiatric social worker］ |
| PT1［(ポルトガル) Partido de los Trabalhadres］ |
| PT2［physical therapist］ |
| PT3［physical therapy］ |
| PT4［Portuguese Republic］ |
| Pt［platinum］ |
| PTA1［Parent-Teacher Association］ |
| PTA2［percutaneous transluminal angioplasty］ |
| PTA3［purified terephthalic acid］ |
| PTBT［Partial Test Ban Treaty］ |
| PTCA［percutaneous transluminal coronary angioplasty］ |
| PTCR［percutaneous transluminal coronary recanalization］ |
| PTI［Press Trust of India］ |
| PTP［press through pack］ |
| PTP 制御［point-to-point control］ |
| PTSD［posttraumatic stress disorders］ |
| PTWC［Pacific Tsunami Warning Center］ |
| Pu［plutonium］ |
| PUR［Puerto Rico］ |
| PUREX（ピューレックス）［Plutonium Uranium Extraction］ |
| PURPA［Public Utility Regulatory Policies Act］ |
| PUS［Pusan］ |
| PVA［polyvinyl alcohol］ |
| PVC［polyvinyl chloride］ |
| PVS［Post-Vietnam Syndrome］ |
| PW［personal watercraft］1 |
| PW2［prisoner of war］ |
| PW3［Republic of Palau］ |
| PWA［person with AIDS］ |
| PWM［pulse width modulation］ |
| PWR［pressurized water reactor］ |
| PX1［patrol aircraft X］ |
| PX2［post exchange］ |
| PY［Republic of Paraguay］ |