CRT can mean:

• Cathode Ray Tube, in electronics, a display device (such as those used in one type of television)
• C Run-Time, in computing
• Charitable Remainder Trust, in Law
• Chinese Remainder Theorem, in mathematics
• Corneal Refractive Therapy, in medicine
• Criterion-referenced test, in U.S. schools
• Critical race theory, a school of thought in philosophy, sociology, and legal theory
• current reality tree in Theory of Constraints
• Capillary refill time

Crt can mean: Cathode ray tube employing electromagnetic focus and deflection Cutaway rendering of a color CRT The cathode ray tube or CRT, invented by Karl Ferdinand Braun, is the display device that was traditionally used in most computer displays, video monitors, televisions, radar displays and oscilloscopes. ... The field of electronics is the study and use of systems that operate by controlling the flow of electrons (or other charge carriers) in devices such as thermionic valves and semiconductors. ... A display device is a device for visual or tactile presentation of images (including text) acquired, stored, or transmitted in various forms. ... The C standard library is a now-standardised collection of header files and library routines used to implement common operations, such as input/output and string handling, in the C programming language. ... Originally, the word computing was synonymous with counting and calculating, and a science that deals with the original sense of computing mathematical calculations. ... A charitable trust (or charity) is a trust organized to serve private or public charitable purposes. ... Law (from the late Old English lagu of probable North Germanic origin) in politics and jurisprudence, is a set of rules or norms of conduct which mandate, proscribe or permit specified relationships among people and organizations, intended to provide methods for ensuring the impartial treatment of such people, and provide... link titleThe Chinese remainder theorem (CRT) is the name for several related results in abstract algebra and number theory. ... Euclid, detail from The School of Athens by Raphael. ... Corneal Refractive Therapy,or Paragon CRT,is a method of treating myopia by reshaping the cornea. ... Medicine is the branch of health science and the sector of public life concerned with maintaining human health or restoring it through the treatment of disease and injury. ... A test is said to be criterion-referenced when provision is made for translating the test score into a statement about the behavior to be expected of a person with that score. ... Motto: E pluribus unum (1789 to 1956) (Latin: Out of Many, One) In God We Trust (1956 to present) Anthem: The Star-Spangled Banner Capital Washington, D.C. Largest city New York City Official language(s) None at federal level; English de facto Government • President • Vice President Federal republic George... American high school students in a school A school is most commonly a place designated for learning. ... Critical Race Theory is the school of thought which holds that race lies at the very nexus of American life. ... The Philosopher (detail), by Rembrandt Philosophy is a study that includes diverse subfields such as aesthetics, epistemology, ethics, logic, and metaphysics. ... Social interactions of people and their consequences are the subject of sociology studies. ... Theory of constraints (TOC) is a body of knowledge on the effective management of (mainly business) organizations, as systems. ...

• Crater (constellation), standard astronomical abbreviation