| 释义 |
- People
- Places
- Ranks and titles
- Science, technology and mathematics Biology and medicine Chemistry Electronics and computing Mathematics
- Transport
- Other uses
- See also
{{wiktionary|co|-co|c/o|care of|co-}}CO or variants may refer to: {{TOC right}}People- Nguyễn Hữu Có (1925–2012), a Vietnamese general
Places - CO postcode area, or Colchester postcode area, England
- Colombia, in various country codes
- Colorado (United States postal abbreviation)
Ranks and titles - Commanding officer, the officer in command of a military unit
- Contracting Officer (CO or KO), in the U.S. government
- C.O., post-nominal initials of members of the congregation of the Oratory of Saint Philip Neri
Science, technology and mathematicsBiology and medicine- Cardiac output (CO), the volume of blood being pumped by the heart per time unit
Chemistry- Cobalt, a chemical element, symbol Co
- Carbon monoxide (CO), a colorless, odorless, and tasteless gas
- Carbonyl group, composed of a carbon atom double-bonded to an oxygen atom: C=O
Electronics and computing- .co, the Internet top-level domain for Colombia
- .co (second-level domain), Internet second-level domain meaning "commercial"
- Commitment ordering (CO), a concurrency control technique for databases
Mathematics- Cofunction in trigonometry
Transport - Chemins de fer Orientaux (CO), a former Ottoman railway company
- Chesapeake and Ohio Railway (C&O or CO), a former American railroad
- Continental Airlines (IATA airline designator CO), an American airline before 2012
- Cobalt Air (IATA airline designator CO), a Cypriot airline from 2016
Other uses - Certificate of occupancy (CO), a legal document
- Certificate of origin (often abbreviated to C/O or CoO), in international trade
- Company (abbreviated co.)
- Corsican language, ISO 639-1 language code co
- Counties of Ireland, abbreviated Co.
- co-, an English prefix meaning coming together
- Telephone exchange, or Central office (CO)
- Castres Olympique, a French rugby club
- Colombia (ISO 3166-1 country code)
- .co, the Internet country code top-level domain (ccTLD) for Colombia
See also - C0 (disambiguation), the letter-number combination
- Care of (disambiguation)
- Co-Co locomotives
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