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Fireless locomotive
A fireless locomotive, or fireless steam locomotive, is a steam locomotive powered by stored steam and superheated water, used where fire or sparks were hazardous.
Firema
Firema (Firema Trasporti S.p.A.) is an Italian rolling stock manufacturer headquartered in Caserta, building locomotives, metro trains, and trams; owned by India's Titagarh group since 2015.
Fireplace
A fireplace is a structure built into a wall or as a factory-made appliance in which fuel, usually wood, is burned in a firebox and vented through a chimney.
Firestone (company)
Firestone, originally the Firestone Tire & Rubber Company, is an American tire brand founded by Harvey S. Firestone in Akron, Ohio, in 1900 and owned by Japan's Bridgestone since 1988.
Firestone and Ford tire controversy
The Firestone and Ford tire controversy was a product-safety crisis in which Firestone tires on the Ford Explorer suffered tread separations, causing hundreds of deaths and a 2000 recall.
Firestreak
Firestreak, known as Blue Jay during development, was a British infrared-homing air-to-air missile developed by de Havilland Propellers and carried by RAF Javelin and Lightning interceptors from 1958 to 1988.
Firewall (computing)
A network firewall, also called a computer firewall, is a device or program that controls traffic between networks with differing security postures, commonly placed at a network's perimeter.
Firewall (construction)
A fire wall is a fire-resistance-rated wall that separates buildings or subdivides one building, remaining standing under fire even if construction on either side collapses.
Fireworks
Fireworks are pyrotechnic devices that burn gunpowder and metal-salt compositions to produce explosions of light, color, and sound at celebrations like Chinese New Year, Diwali, and the Fourth of July.
Fireworks AI
Fireworks AI is an independent inference provider founded in 2022 by former Meta PyTorch lead Lin Qiao, hosting open-weight models and reaching a $17.5 billion valuation by July 2026.
Firing order
Firing order is the sequence in which a multi-cylinder piston engine's cylinders produce their power strokes, chosen at design stage to control vibration and stress.
Firing pin
A firing pin is the part of a firearm that strikes the primer of a cartridge to fire the gun; its impression on the case aids forensic identification.
Firing temperature
Firing temperature, also called rotor inlet temperature, is the temperature of combustion gas entering the first rotating stage of a gas turbine and its key efficiency parameter.
Firm energy
Firm energy is the amount of electric energy a hydropower plant can guarantee to supply continuously under adverse water conditions, measured against a critical drought period.
Firmenich
Firmenich, formerly Chuit & Naef, is a Swiss fragrance and flavor company founded in Geneva in 1895, the world's largest privately owned fragrance and taste company before merging with DSM in 2023.
Firmin Didot
Firmin Didot (1764–1836) was a French printer, typefounder, and politician, second son of François-Ambroise Didot, who created the first Modern typeface in 1784 and patented a stereotyping process in 1797.
Firmware
Firmware is software, with associated data, stored in a hardware device's nonvolatile memory such as ROM or flash, providing the low-level control for the device's operation.
FIRST (organization)
FIRST (For Inspiration and Recognition of Science and Technology) is a not-for-profit founded by Dean Kamen in 1989 that runs youth robotics programs for ages 4 to 18.
First aerial circumnavigation
The first aerial circumnavigation, the first flight around the world, was completed in 1924 by US Army Air Service aviators flying four Douglas World Cruiser biplanes.
First Brands Group
First Brands Group, LLC was an American automotive aftermarket parts company based in Cleveland, Ohio, whose brands included FRAM, Raybestos, and TRICO before its 2025 bankruptcy.
First Canadian Place
First Canadian Place is a 72-storey office tower in Toronto's Financial District, built for the Bank of Montreal and the tallest building in Canada since 1975 at 298 meters.
First class (aviation)
First class is the highest service class on commercial airliners, above business and economy, typically offering private suites, exclusive lounges, and fares reaching five figures on long-haul routes.
First Contentful Paint
First Contentful Paint (FCP) is a web performance metric measuring the time until a browser first renders text, an image, canvas, or SVG on a page.
First Draft of a Report on the EDVAC
The First Draft of a Report on the EDVAC is a 1945 report by John von Neumann giving the first published description of a stored-program computer.
First Exploration & Petroleum Development Company
First Exploration & Petroleum Development Company, known as FIRST E&P, is a Nigerian indigenous oil and gas company founded in 2012 that operates the Anyala and Madu fields in the Niger Delta.
First Fleet
The First Fleet was a convoy of 11 British ships that sailed in 1787 under Captain Arthur Phillip to found a penal colony at Sydney Cove, Australia.
First flight across the English Channel
The first flight across the English Channel was made by French aviator Louis Blériot on 25 July 1909, flying from Calais to Dover in about 37 minutes.
FIRST Global
FIRST Global is a US nonprofit founded by Dean Kamen that has run an annual Olympics-style international robotics competition for high-school students since 2017, with one national team per country.
First Horizon Coliseum
First Horizon Coliseum, formerly Greensboro Coliseum, is a 22,000-seat multi-purpose arena in Greensboro, North Carolina, opened in 1959 and renamed in 2024. It anchors the nine-building Greensboro Complex.
FIRST LEGO League
FIRST LEGO League, or FLL, is a global robotics and STEM program for children run by FIRST and LEGO Education since 1998, reaching about 650,000 students in 77 countries.