All articles starting with P
28,818 articles
Primary unilateral adrenal hyperplasia
Primary unilateral adrenal hyperplasia (PUAH, UAH) is a rare, surgically correctable subtype of primary aldosteronism: one hyperplastic adrenal gland hypersecretes aldosterone, causing renin-suppressed hypertension; adrenal vein sampling, not CT, defines laterality.
Primary user emulation attack
A primary user emulation attack (PUEA) is a physical-layer attack on cognitive radio networks in which a transmitter mimics a licensed primary user's signal to fool spectrum sensing.
Primary uterine inertia
Primary uterine inertia (ICD-11 JB02.0; ICD-10-CM O62.0) is hypotonic, poorly coordinated myometrial contractions from labor onset that fail to dilate the cervix, managed with oxytocin augmentation or cesarean delivery.
Primary venous leg ulcer
Primary venous leg ulcer (ICD-11 BD74.30) is a first-episode venous leg ulcer, arising in skin without preceding ulceration; treated with compression and endovenous ablation, distinct from recurrent ulcers and from CEAP primary venous insufficiency.
Primary vitreoretinal large B-cell lymphoma
Primary vitreoretinal large B-cell lymphoma (PVRL, PVR-LBCL), a rare aggressive DLBCL of the vitreous and retina, a subset of primary CNS lymphoma, masquerading as uveitis with 60-90% brain involvement risk.
Primary yaws
Primary yaws (ICD-11 1C1D.0, mother yaw) is the first stage of yaws, caused by Treponema pallidum subsp. pertenue: a solitary 2–5 cm infectious papilloma on the lower limbs after a mean 21-day incubation, healing in 3–6 months, cured by single-dose azithromycin.
PrimaryBid
PrimaryBid was a London-based fintech company, founded in 2015 or 2016, whose software gave retail investors access to IPOs and follow-on fundraisers normally reserved for institutions.
Primarycare trial
Primarycare (NCT05336019) is a Queen's University-sponsored single-blind mixed-methods feasibility randomized controlled trial of a 12-week Diabetes Self-Management Coaching Program for 40 adults with type 2 diabetes in Gondar, Ethiopia, reporting 70% recruitment, 90% retention, and 85% adherence rates.
Primase
Primase (DNA primase, EC 2.7.7.-) is the ssDNA-dependent RNA polymerase that makes short RNA primers for DNA replication; bacterial DnaG and archaeal/eukaryotic AEP primases are structurally unrelated convergent enzymes.
Primasius
Primasius was a sixth-century bishop of Hadrumetum in Byzacena, in what is now Tunisia, and primate of Byzacena, best known for his five-book Latin commentary on Revelation, still lacking an English translation.
Primate
Primates (Primates) is the mammal order of lemurs, lorises, tarsiers, monkeys, apes, and humans, with over 200 living species and about 500 fossil species; defined by forward-facing eyes, grasping hands with nails, and slow life history, and heavily threatened by deforestation and hunting.
Primate (2025 film)
Primate (2025 film) is a Johannes Roberts horror film for Paramount about a rabid pet chimp attacking friends at a Hawaiian villa; premiered at Fantastic Fest, released January 9, 2026, grossing $41.2 million.
Primate (bishop)
A primate is a bishop holding precedence, and sometimes limited authority, within a national or regional church, often as its senior bishop, chiefly in Western churches.
Primate city
Primate city: term coined by Mark Jefferson (1939) for a country's largest city, more than twice the second-largest (primacy ratio above 3), dominating national economy and politics; examples include Lagos and Addis Ababa.
Primavera (Botticelli)
Primavera (Spring), c. 1480, is Botticelli's large tempera-on-poplar panel of nine mythological figures including Venus, Flora, the Graces, and Mercury, in the Uffizi, Florence, inventory 1890 n. 8360.
Primavera (film)
Primavera (2025) is an Italian-French historical drama, Damiano Michieletto's feature debut, freely based on Tiziano Scarpa's Stabat Mater. Tecla Insolia plays orphan violinist Cecilia opposite Michele Riondino's Vivaldi at Venice's Ospedale della Pietà; released 25 December 2025, it won the Chicago Audience Award and four David di Donatello Awards.
Primavera (software)
Primavera, also known as Oracle Primavera, is a family of project scheduling and portfolio management software, best known for Oracle Primavera P6, acquired by Oracle in 2008.
Primavera Club
Primavera Club is a club-based music festival in Spain, launched in Barcelona in 2006 by the Primavera Sound team as a smaller sister event for emerging acts.
Primavera Sound
Primavera Sound is an annual music festival in Barcelona, Spain, held since 2001 and known for genre-spanning lineups of indie, rock, pop, hip-hop, and electronic acts.
Primavera Sound 2026
Primavera Sound 2026, the 24th Barcelona edition (3–7 June 2026, Parc del Fòrum), drew 287,000 people across 18 stages; storms cancelled Thursday headliners, while Olivia Rodrigo's secret set with Robert Smith highlighted the weekend.
Primax
Primax is a fuel retailer based in Lima, Peru, founded in 2004 by Grupo Romero and Chile's ENAP, with 2,185 stations in Peru, Ecuador, and Colombia by 2024.
Prime (drink)
Prime (drink) is a beverage brand founded in 2022 by Logan Paul and KSI, sold as caffeine-free Prime Hydration and caffeinated Prime Energy with 200 mg caffeine per 12-oz can, known for viral influencer marketing and youth-safety controversy.
Prime (symbol)
The prime (′), also called the prime mark, is a typographic symbol marking minutes of arc, feet, and the derivative in calculus, attributed to Lagrange.
Prime and irreducible elements
Prime and irreducible elements are related notions in ring theory: every prime element of an integral domain is irreducible, while the converse fails, as in Z[√−5].
PRIME Care trial
PRIME Care (PRecision Medicine In MEntal health Care), NCT03170362, a VA pragmatic randomized trial of pharmacogenomic-guided antidepressant prescribing in 1,944 veterans with major depressive disorder at 22 medical centers; it changed prescribing but showed small, nonpersistent remission gains.
Prime Circle
Prime Circle is a multi-platinum South African rock band from Witbank, formed around 2000, with eight studio albums and extensive touring in Europe, especially Germany.
Prime coat
A prime coat is a low-viscosity bituminous material sprayed on a granular road base to waterproof and stabilize it and promote adhesion with the overlying asphalt.
Prime Computer
Prime Computer, Inc., also known as PR1ME, was an American minicomputer manufacturer in Massachusetts, founded in 1972, which built the 32-bit 50-series and PRIMOS before ending manufacturing in 1992.
Prime Directive
Prime Directive (General Order 1) is Star Trek's Starfleet rule forbidding interference with other civilizations' development, especially pre-warp ones. First mentioned in "The Return of the Archons" (1967); frequently violated, studied as a colonialism critique.
Prime editing
Prime editing (PE) is a 2019 CRISPR-derived genome editing method using a Cas9 nickase-reverse transcriptase fusion and pegRNA to install insertions, deletions, and substitutions without double-strand breaks or donor DNA; PE2 through PE7 variants and first clinical uses.