Chi

Look up chi in Wiktionary, the free dictionary.

Chi may refer to:

Greek

Ch'i or qi (氣), "energy force" in Chinese culture
Chi (length) (尺), a traditional Chinese unit of length ("Chinese foot"), approximately ⅓ of a meter
Chi (surname), Chinese surnames
Chi (mythology) (螭), a dragon in Chinese mythology

Named after the Greek letter:
- Chi distribution, in mathematics
- Chi-squared distribution, in mathematics
- Chi site, a DNA sequence that serves as a recombination hot spot
- A symbol for electronegativity
Creatinine height ratio, a metric used in determining body composition
Hyperbolic cosine integral

CHI may stand for:

Chile, "CHI" is the IOC code and FIFA code for the country, although "CHL" is the ISO three letter code
Carvill Hurricane Index, a measure of hurricane damage potential
Catholic Health Initiatives, a faith-based, non-profit health system
Channel Islands (Chapman code: CHI)
Chichester, England, is known as Chi by local people in West Sussex
Chingford railway station, railway station code
Child Health International, a UK-based charity for children's health (especially Cystic Fibrosis) in poor countries
Columbia Helicopters, an American aircraft manufacturer
Commission for Health Improvement, a former non-departmental public body of the Department of Health in the United Kingdom
Computer-human interaction or human-computer interaction, the study of the interaction of computers and people
- CHI (conference), an annual conference on computer-human interaction
CHI, a secret society at Longwood University
CHI, the IATA code for all Chicago airports
CHI, the Amtrak code for Chicago Union Station
Canada Health Infoway, a not-for-profit organization engaged in the development of a pan-Canadian electronic health record (EHR) system
Community Health Index (Scotland), a system of patient identification used in Scottish public healthcare
Closed head injury
Compulsory health insurance