CO
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Look up CO, Co, or co in Wiktionary, the free dictionary. |
CO, Co, co, .co, c/o ℅ may refer to:
Computing and technology
- .co, the Internet top-level domain for Colombia
- .co (second-level domain), Internet second-level domain used to denote commercial organizations in many countries
- Changeover switch, a type of electrical switch with both types of opened/closed contacts
- Commitment ordering or Commit ordering, a concurrency control (serializability) technique for databases and transactional systems
Science and medicine
- Co, the chemical symbol for the element cobalt
- Carbon monoxide, the molecular formula of the toxic gas (also called Carbonous oxide)
- Cardiac output, the volume of blood being pumped by the heart per time unit
- Coccygeal nerve of the spinal cord
Geographic codes
- Co., an abbreviation for county
- CO postcode area for Colchester, England
- Colombia, in various country codes
- Colorado (United States postal abbreviation)
- Como, Lombardia, Italy
Transport
- Chemins de fer Orientaux, an Ottoman railway company
- Chesapeake and Ohio Railway
- Continental Airlines, IATA airline designator
People and official titles
- Nguyễn Hữu Có (1925–2012), Vietnamese general
- C.O., post-nominal initials to identify members of the congregation of the Oratory of Saint Philip Neri
- Certified Orthotist
- Chief Officer
- Commanding officer, military
- Commissioned officer, military
- Communications Officer in Central Communications Command
- Conscientious objector, military
- Conservation officer
- Contracting Officer
- Corrections Officer (or Correctional Officer)
Other uses
- co, an English prefix meaning coming together (co-operate, co-curricular activities, co-brother etc.)
- co, a gender-neutral pronoun
- co (function prefix) (complementary), a prefix for complementary functions in mathematics
- ℅, care of, used to address a letter when the letter must pass through an intermediary (also written c/o)
- Central office, in telecommunications and telephony
- Certificate of occupancy, a legal document
- Certificate of origin, used in international trade
- Company (co.), a general business abbreviation
- Corsican language, ISO 639 alpha-1
See also
- C0 (disambiguation), the letter-number combination
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