CRT or Crt may refer to:

Science, technology, and mathematics

Medicine and biology

* Calreticulin, a protein *

Capillary refill Capillary refill time (CRT) is defined as the time taken for color to return to an external capillary bed after pressure is applied to cause blanching. It can be measured by holding a hand higher than heart-level and pressing the soft pad of a f ...

time, for blood to refill capillaries *

Cardiac resynchronization therapy Cardiac resynchronisation therapy (CRT or CRT-P) is the insertion of electrodes in the left and right ventricles of the heart, as well as on occasion the right atrium, to treat heart failure by coordinating the function of the left and right v ...

and CRT defibrillator (CRT-D) * Catheter-related thrombosis, the development of a blood clot related to long-term use of central venous catheters * Certified Respiratory Therapist * Chemoradiotherapy, chemo- and radiotherapy combined * Cognitive Retention Therapy, for dementia * Corneal Refractive Therapy, in optometrics * CRT (genetics), a gene cluster

Mathematics and technology

Cathode-ray tube A cathode-ray tube (CRT) is a vacuum tube containing one or more electron guns, which emit electron beams that are manipulated to display images on a Phosphorescence, phosphorescent screen. The images may represent electrical waveforms (osci ...

, a display *

Chinese remainder theorem In mathematics, the Chinese remainder theorem states that if one knows the remainders of the Euclidean division of an integer ''n'' by several integers, then one can determine uniquely the remainder of the division of ''n'' by the product of the ...

in number theory * Microsoft C Run-Time library * SecureCRT, formerly CRT, a telnet client * .crt, X.509 Certificate filename extension

Social sciences

* Cognitive reflection test, in psychology *

Critical race theory Critical race theory (CRT) is a cross-disciplinary examination, by social and civil-rights scholars and activists, of how laws, social and political movements, and media shape, and are shaped by, social conceptions of race and ethnicity. Goa ...

, an academic framework of analysis * Current reality tree (theory of constraints), in process management

Transport

* Canal & River Trust, England and Wales *

Changchun Rail Transit Changchun Rail Transit, is the rapid transit and light rail system in the city of Changchun, Jilin Province, China. Its first line, Line 3, is the first true light rail line in Mainland China. The system consists of three light rail lines an ...

, China * Chongqing Rail Transit, China *

Connecticut River Transit Connecticut () is the southernmost state in the New England region of the Northeastern United States. It is bordered by Rhode Island to the east, Massachusetts to the north, New York to the west, and Long Island Sound to the south. Its ca ...

, former bus service in Vermont, US * Former

Cross River Tram Cross River Tram (formerly Cross River Transit) was a Transport for London (TfL) proposal for a tram system in London. It was planned to run on a north–south route from Camden Town in the north, via King's Cross, to Peckham and Brixton in ...

project, London *

CRT Group CRT Group is an intermodal transport company in Australia. It was founded in 1954 as Colin Rees Transport, a taxi truck company in Sydney. In 1981 it became known as the CRT Group, and by the time of its acquisition by QR National in June 2005 ...

, transport company in Australia *

Chicago Rapid Transit Company The Chicago Rapid Transit Company (CRT) was a privately owned firm providing rapid transit rail service in Chicago, Illinois and several adjacent communities between 1924 and 1947. The CRT is one of the predecessors of the Chicago Transit Auth ...

, former rail company

Other uses

* Canadian Railway Troops, WWI * Charitable remainder trust *

Claiming Rule Teams The 2012 MotoGP World Championship season was the 64th F.I.M. Road Racing World Championship season. Casey Stoner started the season as the defending World Champion, while Honda was the defending Manufacturers' Champion. In the premier MotoGP ...

, in motorcycle racing * Columbia River Treaty, Canada-US, 1960s *

Connecticut Repertory Theatre Connecticut Repertory Theatre (CRT) at the Storrs campus of the University of Connecticut is a professional theatre run by the Department of Dramatic Arts, a part of the School of Fine Arts. Its current artistic director is Megan Monaghan Rivas; pa ...

, University of Connecticut * Correctional Emergency Response Team * An abbreviation for Crater (constellation) *

Iyojwaʼja Chorote Eklenhui (Iyojwaja Chorote) is a language spoken in northeast Salta in Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers ...

, a language in Salta province, Argentina, ISO 639 code {{disambiguation