All articles starting with P
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Protestant Reformers
The Protestant Reformers were 16th-century theologians led by Martin Luther, Huldrych Zwingli, and John Calvin who broke with the Roman Catholic Church, producing the Lutheran, Reformed, Anglican, and Anabaptist traditions.
Protestant views of marriage
Protestant views of marriage are the teachings of Protestant churches on what marriage is and when it may be dissolved, beginning with the Reformation rejection of marriage as a sacrament, which opened divorce and remarriage.
Protestant work ethic
Protestant work ethic, or Calvinist/Puritan work ethic, coined by Max Weber in The Protestant Ethic and the Spirit of Capitalism (1904-05): the thesis that Calvinist calling, predestination, and asceticism fostered diligence, frugality, and capitalism.
Protestantism
Protestantism, also called Protestant Christianity, is the branch of western Christianity comprising churches inspired by the sixteenth-century Reformation, which broke with Rome beginning in 1517.
Protestantism by country
Protestantism by country covers the national distribution of Protestants, Christians in churches tracing to the 16th-century Reformation, with Nigeria, the United States, China, and Brazil the largest.
Protestantism in the United States
Protestantism in the United States, also called American Protestantism, is the branch of Christianity tracing to the Reformation, dominant since the colonial era and followed by 40% of adults.
Protests against Donald Trump
Protests against Donald Trump: mass demonstrations during his 2017-2021 and post-2025 presidencies. Largest sustained US protest movement; Women's March, Hands Off, and No Kings days; overwhelmingly nonviolent.
Protests against Elon Musk
Protests against Elon Musk, led by the Tesla Takedown movement from February 2025, targeted Tesla showrooms worldwide over Musk's DOGE role; organizers urged boycotts, Tesla sales fell 13%, and Trump called dealer attacks domestic terrorism.
Protests against mass deportation during the second Trump administration
Protests against mass deportation during the second Trump administration, also called the anti-ICE protests and No Kings movement, began with June 6, 2025 ICE raids in Los Angeles, spread nationwide, and coincided with falling public support for deportations.
Protests against SOPA and PIPA
The protests against SOPA and PIPA were online activism in late 2011 and January 2012 against two US anti-piracy bills, culminating in the January 18, 2012 Internet blackout.
Protests against the 2026 Iran war
Protests against the 2026 Iran war: worldwide demonstrations after the 28 February 2026 US-Israeli strikes on Iran, following the suppressed January 2026 Iranian uprising; about 3,200 anti-war protests in the first month, muted compared with Gaza and Ukraine, amid low US and global war approval.
Protests against the dismissal of Mykhailo Fedorov (Михайло Федоров)
Wartime protests across Ukraine from 16 July 2026 against Zelenskyy's dismissal of Defense Minister Mykhailo Fedorov (Михайло Федоров), demanding his reinstatement and Syrskyi's removal; Syrskyi was dismissed 21 July but Fedorov was not returned.
Protests against the second Trump administration
Protests against the second Trump administration are U.S. demonstrations from early 2025 onward, led by the No Kings and Hands Off days of action and the 50501 movement, with over 10,700 protests in 2025 and No Kings among the largest single-day protests in U.S. history.
Protests of 1968
Protests of 1968, the global wave of student, worker, and civil rights unrest spanning Paris, Prague, Mexico City, Chicago, and beyond; May 1968 French general strike, Prague Spring, Tlatelolco massacre, and Chicago DNC protests.
Proteus (bacterium)
Proteus (bacterium), genus Proteus Hauser 1885, Proteus mirabilis, Proteus vulgaris: Gram-negative Morganellaceae rods causing UTIs; P. mirabilis swarms, makes urease, and blocks catheters with crystalline biofilms.
Proteus (Marvel Comics)
Proteus (Kevin MacTaggert, Mutant X) is a Marvel Comics X-Men villain created by Claremont and Byrne, debuting in X-Men #125-128 (1979). A reality-warping mutant son of Moira MacTaggert who possesses and burns out host bodies and is vulnerable to metal.
Proteus (moon)
Proteus (Neptune VIII) is the second-largest moon of Neptune, a dark, irregularly shaped icy body about 420 km across, discovered by Voyager 2 in 1989.
Proteus (Πρωτεύς)
Proteus (Πρωτεύς), the prophetic Greek 'Old Man of the Sea' and herdsman of Poseidon's seals, shapeshifts to escape captors such as Menelaus in Odyssey 4; also an Egyptian king in Herodotus and Euripides, source of 'protean'.
Proteus Digital Health
Proteus Digital Health, formerly Proteus Biomedical, was a Redwood City, California digital-medicines company founded in 2001; its assets were sold to Otsuka after its 2020 bankruptcy.
Proteus mirabilis
Proteus mirabilis, a Gram-negative swarming, urease-producing Enterobacterales bacterium described by Hauser in 1885; leading cause of catheter-associated UTIs, struvite stones, crystalline catheter biofilms, and Dienes lines, with intrinsic polymyxin resistance.
Proteus syndrome
Proteus syndrome (elephant man disease) is an ultra-rare mosaic overgrowth disorder caused by a somatic activating AKT1 c.49G>A variant, with postnatal asymmetric overgrowth from 6-18 months, cerebriform connective tissue nevi, and DVT/pulmonary embolism risk.
Proteus vulgaris
Proteus vulgaris is a gram-negative, rod-shaped bacterium in the family Morganellaceae that lives in soil, fecal matter, and sewage and opportunistically causes cystitis, pyelonephritis, and wound infections.
ProteusONE
ProteusONE is a single-room, compact-gantry proton therapy system made by IBA of Louvain-la-Neuve, Belgium, first installed clinically at the Willis-Knighton Cancer Center in Shreveport, Louisiana, in 2014.
ProtGPT2
ProtGPT2 is a GPT-2-style language model that generates novel protein sequences, trained on 50 million UniRef50 sequences and released in 2022 by Noelia Ferruz and colleagues at the University of Bayreuth.
Prothallus
Prothallus (plural prothalli): the small, green, heart-shaped free-living gametophyte of ferns, bearing antheridia and archegonia; homosporous ferns allow gametophytic selfing, and fertilization requires water for flagellate sperm.
Prothiocarb
Prothiocarb (SN 41703), an obsolete thiocarbamate fungicide (CAS 19622-08-3) against Pythium and Phytophthora soil diseases; FRAC 28, lipid synthesis inhibitor; not EU/UK approved. Distinct from prothioconazole.
Prothioconazole
Prothioconazole is a broad-spectrum systemic triazolinthione fungicide developed by Bayer CropScience for crop diseases, used mainly on cereals and other arable crops, approved in the EU in 2008.
Prothiofos
Prothiofos (Tokuthion, Dichlorpropaphos), CAS 34643-46-4, is an organophosphate insecticide and acetylcholinesterase inhibitor used against caterpillars, scale insects, thrips, and cutworms; not approved in the EU.
Prothipendyl
Prothipendyl (Dominal) is a low-potency azaphenothiazine first-generation antipsychotic, ATC N05AX07, D2 antagonist with antihistaminic and anticholinergic effects, half-life 2-3 h, DDD 0.24 g, used for psychomotor agitation.
Prothoate
Prothoate (发硫磷, Fostion, Telefos, Trimethoate) is an organophosphate insecticide and acaricide, CAS 2275-18-5, C9H20NO3PS2, a cholinesterase inhibitor with rabbit dermal LD50 14 mg/kg; not EU-approved and considered obsolete by WHO.