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Batalha Monastery
Batalha Monastery (Mosteiro da Batalha) is a Dominican monastery in central Portugal, built to commemorate King João I's victory over Castile at Aljubarrota in 1385.
Batalhão de Operações Policiais Especiais
Batalhão de Operações Policiais Especiais (BOPE): special-operations battalions of Brazilian state military polices, notably PMERJ's Rio de Janeiro unit (1991, from 1978 NuCOE), volunteer tactical reserve for hostage rescue, bomb disposal, and favela urban operations.
Batalin-Vilkovisky formalism
The Batalin-Vilkovisky formalism, also called the BV or field-antifield formalism, is a Lagrangian quantization procedure for gauge theories, introduced by Batalin and Vilkovisky in 1981.
Batallon rifles
Batallón Rifles, a celebrated infantry battalion of Gran Colombia created in 1818 with British riflemen, fought at Boyacá, Bomboná, and Carabobo before its dissolution in 1830.
Batam
Batam: Indonesian island and city in Riau Islands Province, 20 km from Singapore; free trade zone and industrial hub developed since 1973 under BP Batam, population about 1.3 million.
Batan Oil and Gas Field
Batan is an onshore oil and gas field in the western Niger Delta of Nigeria, within Oil Mining Lease 42 and operated since 2011 by Neconde Energy.
Batanes
Batanes is the Philippines' northernmost and smallest province, ten volcanic islands in the Luzon Strait with six municipalities, 18,937 residents (2024), Ivatan culture, protected landscape status, and managed community-based tourism.
Batang Kali massacre
Batang Kali massacre: killing of 24 unarmed Chinese rubber-estate workers by a Scots Guards patrol on 12 December 1948 at Sungai Rimoh, Selangor, during the Malayan Emergency; disputed accounts, halted investigations, and failed legal campaigns for an inquiry.
Batang Quiapo (TV series)
FPJ's Batang Quiapo is a Philippine action drama television series starring Coco Martin as Tanggol, an outlaw in Manila's Quiapo district; adapted from a 1986 Fernando Poe Jr. film, it aired from 2023 to 2026.
Batangas
Batangas is a province in CALABARZON, southwestern Luzon, Philippines, with capital Batangas City; 30 municipalities, 4 cities, land area 316,581 ha, home to Taal Volcano, GDP PhP 713.22 billion (2025).
Batangas City
Batangas City (Lungsod ng Batangas), capital of Batangas Province, Philippines; founded 1581 as Batangan, a city since 1969 (RA 5495). Industrial port city of CALABARZON with an international port, 3,730.5 MW of gas power, 105 barangays, 358,267 people (2024).
Batara
Batara (Lesson, 1831) is a monotypic antbird genus (Thamnophilidae) holding the Giant Antshrike, Batara cinerea, South America's largest antshrike at about 34 cm; from Guaraní batará, barred or spotted.
Batara Guru
Batara Guru is a divine ancestor figure in Bugis mythology of South Sulawesi, Indonesia, the first king of Luwu', also a name for Shiva in Javanese, Malay, and Batak traditions.
Batatyachi Chal
Batatyachi Chal (बटाट्याची चाळ) is a humorous Marathi book by P. L. Deshpande, published in 1958 by Mauj Prakashan, Mumbai, satirizing the middle-class residents of a fictitious chawl in Girgaon.
Batavi
Batavi (Batavis, Castra Batava) was a Roman fort and fortified settlement on the Danube-Inn confluence at modern Passau, Bavaria, in Raetia; its name evolved into "Passau", and its late Roman remains lie under the old town.
Batavia (1628 ship)
Batavia was a Dutch East India Company ship that wrecked on its maiden voyage off Western Australia in 1629, followed by a mutiny that killed over 100 survivors.
Batavia, Dutch East Indies
Batavia, also known as Batavia, Java, was the port city founded by the Dutch East India Company in 1619 on Java, serving as colonial capital until renamed Jakarta in 1942.
Batavian Republic
Batavian Republic (Bataafse Republiek), Dutch client state of France 1795-1806, successor to the Republic of the Seven United Netherlands; proclaimed 19 January 1795 after French invasion, first Dutch constitution in 1798, ended as Kingdom of Holland under Louis Bonaparte.
Batawana
The Batawana (BaTawana) are a Tswana people who broke from the BaNgwato and established a state in Ngamiland, northwestern Botswana, around the Okavango Delta in the early nineteenth century.
Batch '81
Batch '81 (AKΩ Batch '81) is Mike de Leon's 1982 Filipino drama about fraternity hazing at Alpha Kappa Omega, an allegory of Marcos-era martial law; it premiered at Cannes Directors' Fortnight and was restored in 4K in 2017.
Batch Bayesian optimization
Batch Bayesian optimization is a machine learning method that evaluates a batch of candidate points in parallel to optimize expensive black-box functions like hyperparameter tuning.
Batch distillation
Batch distillation is a separation process in which a finite charge of liquid is heated in a still and components are withdrawn sequentially by volatility as compositions change over time.
Batch effect correction
Batch effect correction is a family of computational methods that remove systematic technical variation between processing batches in high-throughput biological data, preserving genuine biological differences.
Batch fermentation
Batch fermentation is a bioprocess method in which microorganisms grow in a closed vessel with all nutrients charged at the start and no feeding or withdrawal during the run.
Batch file
A batch file is a text file of commands that the Windows command interpreter, cmd.exe, executes one at a time, typically with the .bat or .cmd extension.
Batch normalization
Batch normalization, or batch norm, is a technique for training deep neural networks, introduced at Google in 2015, that normalizes layer activations using mini-batch statistics.
Batch picking
Batch picking is a warehouse order picking method that groups several customer orders into a batch picked in one pass, reducing trips but requiring sorting afterward.
Batch processing
Batch processing, also called batch mode, is a way of running computer work in which jobs are collected and executed without user interaction, often on large volumes of data.
Batch production
Batch production is a manufacturing mode in which goods are made in finite groups, or batches, moving together through each operation on shared equipment, with a changeover between lots.
Batch reactor
A batch reactor is a closed, often agitated vessel in which reactants react for a set time before the entire mixture is withdrawn, used in pharmaceuticals and fine chemicals.