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Chirped pulse amplification
Chirped pulse amplification (CPA) is a laser technique that stretches ultrashort pulses before amplifying and recompressing them, raising achievable peak powers ten orders of magnitude since its 1985 proposal.
Chirped return-to-zero
Chirped return-to-zero (CRZ) is an optical modulation format in which return-to-zero pulses carry a non-information-bearing phase modulation, giving better nonlinear tolerance in long-haul and transoceanic WDM systems.
Chisel
A chisel is a hand tool with a shaped cutting edge at one end of a blade, driven by a mallet, hammer, or hand pressure to cut or carve wood, stone, or metal.
Chișinău International Airport
Chișinău International Airport, officially named for composer Eugen Doga since 2025, is Moldova's only international airport, serving the capital and handling over 6 million passengers in 2025.
Chisso
Chisso Corporation (チッソ株式会社) is a Japanese chemical company founded in 1906, best known as the company whose Minamata factory discharged methylmercury wastewater and caused Minamata disease.
Chiswick House
Chiswick House is a Grade I listed Palladian villa in west London, built between 1726 and 1729 by Lord Burlington with William Kent, a pioneer of neo-Palladian architecture in Britain.
Chita Daini thermal power station
Chita Daini thermal power station (知多第二火力発電所) is an LNG-fired combined-cycle power station in Chita City, Japan, operated by JERA with a maximum output of 1,708 MW.
Chita Kyodo LNG Terminal
Chita Kyodo LNG Terminal, also called the Chita LNG Joint Terminal, is an LNG import terminal in Chita City, Aichi Prefecture, Japan, in operation since 1977.
Chita LNG Terminal
Chita LNG Terminal, also known as Chita LNG Jigyōsho, is a liquefied natural gas receiving complex in Chita City, Aichi Prefecture, Japan, operated by JERA and Toho Gas.
Chita Midorihama LNG Terminal
Chita Midorihama LNG Terminal (知多緑浜工場) is an LNG import terminal in Chita, Aichi Prefecture, Japan, owned and operated by Toho Gas; it opened in November 2001 as the third LNG facility in the Chita complex.
Chita thermal power station
The Chita thermal power station (知多火力発電所) is an LNG-fired power plant on Ise Bay in Chita, Aichi Prefecture, Japan, opened by Chubu Electric in 1966 and operated by JERA.
Chitarra (pasta tool)
The chitarra, Italian for guitar, is a pasta-cutting tool from Abruzzo: a wooden frame strung with steel wires that cuts fresh egg pasta into square-section spaghetti.
Chittagong-Feni-Bakhrabad Gas Transmission Parallel Pipeline Project
The Chittagong-Feni-Bakhrabad Gas Transmission Parallel Pipeline Project built a 36-inch, 181-kilometer gas pipeline from Chattogram to Bakhrabad, Bangladesh, commissioned in 2020 to carry imported re-gasified LNG into the national grid.
Chittaranjan Locomotive Works
Chittaranjan Locomotive Works is an Indian Railways production unit at Chittaranjan, West Bengal, which built steam, diesel, and now electric locomotives, producing a record 700 in 2024-25.
Chittenden Locks
The Hiram M. Chittenden Locks, known locally as the Ballard Locks, are navigation locks in Seattle completed in 1917 as part of the Lake Washington Ship Canal.
Chittor Fort (चित्तौड़ दुर्ग)
Chittor Fort (चित्तौड़ दुर्ग), also called Chittorgarh Fort, is a hill fort in Rajasthan, India, the capital of Mewar and a UNESCO World Heritage Site since 2013.
Chitty-Chitty-Bang-Bang
Chitty-Chitty-Bang-Bang is a 1964 children's novel by Ian Fleming about a magical flying car restored by inventor Caractacus Pott, adapted into a 1968 musical film.
Chivor hydroelectric plant
The Chivor hydroelectric plant (Central Hidroeléctrica de Chivor) is a 1,000 MW power station on the Batá River in Boyacá, Colombia, owned by AES Colombia.
Chiyoda Corporation
Chiyoda Corporation is a Japanese engineering, procurement, and construction contractor founded in 1948, known for LNG plants in Qatar and the SPERA Hydrogen methylcyclohexane carrier system.
Chizhou Jiuhua power station
Chizhou Jiuhua power station is an operating coal-fired power station of at least 1,960 MW in Jiangkou Town, Chizhou, Anhui, China, with units commissioned in 2005 and 2025.
CHKDSK
CHKDSK, or Check Disk, is a Windows command-line utility that checks a volume's file system for errors and repairs them when run with the /f or /r parameter.
Chloramination
Chloramination is a drinking water treatment that converts free chlorine to monochloramine by adding ammonia, producing a longer-lasting residual disinfectant that forms fewer regulated byproducts; about 30% of surveyed US systems use it.
Chloride solid electrolyte
A chloride solid electrolyte is a lithium- or sodium-ion-conducting inorganic compound, typically Li₃MCl₆, used in all-solid-state batteries and valued for high ionic conductivity and voltage stability.
Chloride-ion battery
A chloride-ion battery (CIB) is a rechargeable battery in which chloride anions, rather than metal cations, carry charge, first demonstrated at Karlsruhe Institute of Technology.
Chlorinated polyethylene
Chlorinated polyethylene (CPE) is a family of polymers made by replacing some hydrogen atoms in polyethylene with chlorine, giving oil, heat, weather, and ozone resistance, and used in hoses, gaskets, and cable sheathing.
Chlorinated polyvinyl chloride
Chlorinated polyvinyl chloride (CPVC) is a thermoplastic made by post-chlorinating PVC resin to 63 to 69 percent chlorine, widely used as hot-water plumbing pipe rated to 200 °F.
Chmod
Chmod, short for change mode, is a Unix and POSIX command that changes the file mode bits of files and directories, appearing in the first Unix manual in 1971.
CHO cell
CHO cells are immortalized mammalian cells derived from a Chinese hamster ovary in 1957, and the dominant host for producing therapeutic proteins, especially monoclonal antibodies.
CHO-DG44
CHO-DG44 (CVCL_7180) is a Chinese hamster ovary cell line with both DHFR alleles deleted, established in 1983 by Urlaub and Chasin. Unlike CHO-K1, CHO-S, and DXB11, it enables DHFR/methotrexate selection and gene amplification for recombinant protein production.
Chobham armour
Chobham armor, also known as Dorchester armor, is classified British composite tank armor developed in Britain from the 1960s, combining steel plates with layers of other materials.