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Costantino Creton
Costantino Creton is a French materials scientist at CNRS and ESPCI Paris who studies how soft polymers deform, stick, and break, best known for toughening elastomers with sacrificial bonds.
CoStar Group
CoStar Group is an American commercial real estate information and analytics company founded by Andrew C. Florance in 1987 and headquartered in Arlington, Virginia. It operates marketplaces including Apartments.com and LoopNet.
Costas Emmanuel Synolakis
Costas Emmanuel Synolakis is a Greek-American coastal engineer and tsunami scientist at the University of Southern California, elected to the National Academy of Engineering in 2023.
Costas loop
A Costas loop is a phase-locked loop circuit that recovers the carrier of a suppressed-carrier signal while demodulating its data, invented by John P. Costas in 1956.
Costayaco Oil and Gas Field
Costayaco is an oil field in the Chaza Block of the Putumayo Basin in southwestern Colombia, discovered by Gran Tierra Energy in 2007 and producing since then.
Cosworth
Cosworth is a British engineering company, founded by Mike Costin and Keith Duckworth in 1958, that builds high-performance racing engines, including the famous DFV Formula One V8.
CosyPose
CosyPose is a computer vision method introduced at ECCV 2020 that estimates the 6D pose of multiple known objects from RGB images taken from unknown camera viewpoints.
CosyVoice
CosyVoice is an open, multilingual, zero-shot text-to-speech and voice-cloning model family from Alibaba's FunAudioLLM project, first published in July 2024, with open weights and a commercial Alibaba Cloud service.
COTECMAR
COTECMAR, the Science and Technology Corporation for the Development of Naval, Maritime and Riverine Industry, is Colombia's largest shipyard, founded in 2000 in Cartagena by the Colombian Navy and three universities.
Cotopaxi (company)
Cotopaxi (Global Uprising, PBC) is a Salt Lake City outdoor gear brand founded in 2014 by Davis Smith and Stephan Jacob, named for the Ecuadorian volcano with llama mascots Coto and Paxi; known for Del Día deadstock packs and donating 1% of product revenue to the Cotopaxi Foundation.
Cottage
Cottage: a small dwelling, historically a farm laborer's home, now also a modest house or vacation home. From Middle English cotage; distinct from the bungalow (Hindi bangla); central to English rural housing history and today's second-home and holiday-let markets.
Cotton gin
A cotton gin is a machine that separates cotton fiber from its seeds, a process called ginning; Eli Whitney's 1794 patent made short-staple cotton profitable and transformed the American South.
Cotton mill
A cotton mill is a factory building where raw cotton is spun into yarn or woven into cloth, archetypal of the Industrial Revolution since Arkwright's Cromford mill of 1771.
Cotton swab
A cotton swab, also known as a cotton bud, is a short stick with cotton-tipped ends used in personal care, cosmetics, first aid, and laboratory work.
Cottonelle
Cottonelle is an American brand of toilet paper and flushable wipes owned by Kimberly-Clark, introduced by the Scott Paper Company in the United States in 1972.
Cottonwood Energy Project
The Cottonwood Energy Project is a natural gas-fired combined cycle power plant in Newton County, Texas, developed by InterGen and in commercial operation since 2003.
Couch
A couch is an upholstered piece of furniture seating two to four people, built with a back and often armrests; in American English it is the common word for a sofa.
Couchbase Inc.
Couchbase Inc. is an American database software company in Santa Clara, California. Its distributed NoSQL database stores data as JSON documents, serving them from memory and syncing to mobile devices.
CouchDB
CouchDB, formally Apache CouchDB, is an open-source document-oriented database storing schema-free JSON documents behind a RESTful HTTP API, written in Erlang and begun in 2005.
Cougar (MRAP)
The Cougar is an American MRAP armored vehicle family designed in 2004 by Force Protection, built in 4x4 and 6x6 versions to protect troops from mines and IEDs.
Coulomb earth pressure theory
Coulomb earth pressure theory, formulated by Charles-Augustin de Coulomb in 1773, calculates the lateral force soil exerts on a retaining wall using a sliding wedge analysis.
Coulson 737 Fireliner
The Coulson 737 Fireliner is a large air tanker produced by converting Boeing 737 airliners for aerial firefighting, developed by Coulson Aviation of Port Alberni, British Columbia, and first certified by the FAA in 2018.
Coulson Aviation
Coulson Aviation is a family-owned aerial firefighting company founded in 1985 in Port Alberni, British Columbia, operating converted Boeing 737 and C-130 large air tankers.
Council of Global Unions
The Council of Global Unions (CGU) is a body coordinating international trade union action between the ITUC, Global Union Federations, and TUAC, formed in 2006.
Count–min sketch
The count–min sketch (CM sketch) is a sublinear-space data structure for estimating item frequencies in data streams, introduced in 2005 by Graham Cormode and S. Muthukrishnan; estimates are never too low.
Counter (digital)
A digital counter is a sequential logic circuit built from flip-flops that steps through a prescribed sequence of states, usually binary, on each clock pulse.
Counter mode
Counter mode (CTR) is a block cipher mode of operation that encrypts counter blocks to produce a keystream, XORed with plaintext, effectively turning a block cipher into a stream cipher.
Counter-electromotive force
Counter-electromotive force (back EMF) is the voltage generated in a running electric motor that opposes the applied supply voltage, reducing the current the motor draws.
Counter-IED efforts
Counter-IED efforts are the military, law-enforcement, and humanitarian activities directed against improvised explosive devices, spanning detection and neutralization of devices, disruption of the networks that build and place them, and protection of forces.
Counter-insurgency aircraft
A counter-insurgency (COIN) aircraft is a light, low-cost military airplane supporting ground forces against insurgents, with slow, propeller-driven types like the OV-10 Bronco emerging in the Vietnam War.