Qi

n. Chinese concept meaning energy or cosmic life force (pronounced "chi", referred to in the fields of Arts, Health, Martial Arts, etc.)

QI, standing for Quite Interesting, is a comedy panel game television quiz show created and produced by John Lloyd, hosted by Stephen Fry, and featuring regular panellist Alan Davies. It is broadcast on BBC Two and BBC Four, while older, syndicated episodes are shown on Dave (the recently re-branded UKTV G2). QI has the highest viewing figures for any show on BBC Four.
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Qi, also commonly spelled ch'i (in Wade-Giles romanization) or ki (in romanized Japanese), is a fundamental concept of traditional Chinese culture. Qi is believed to be part of every living thing that exists, as a kind of “life force” or “spiritual energy”. It is frequently translated as “energy flow", or literally as “air” or “breath”. (For example, "tiānqì", literally “sky breath”, is the ordinary Chinese word for "weather"). In Mandarin Chinese it is pronounced something like "chee" in English, but the tongue position is different. (See .)
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n. IQ, intelligence quotient, measure of an individual's intelligence obtained through standardized intelligence tests

Noun
1. the circulating life energy that in Chinese philosophy is thought to be inherent in all things; in traditional Chinese medicine the balance of negative and positive forms in the body is believed to be essential for good health
(synonym) chi, ch'i, ki
(hypernym) energy, vim, vitality
(classification) China, People's Republic of China, mainland China, Communist China, Red China, PRC

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The man from Qi feared that the sky might fall.
Said of imaginary or groundless fears. Cross the bridge when you get there!