Cao
From Wikipedia, the free encyclopedia
Cao, CaO, or CAO can mean:
- Calcium oxide, also known as lime
- Chief Administrative Officer
- Cao Wei, also called Wei, one of the regimes that competed for control of China during the Three Kingdoms period.
- Cao Cao, founder of Cao Wei
- Cao (曹), a Chinese family name, see also Cao Cao#The Cao clan
- Diogo Cão, a Portuguese explorer in the 15th century
- Cao Cao (song)
- Cao Cao (JJ Lin album)
- CAO is a mnemonic used to teach trigonometry, showing that cotangent is the ratio of adjacent over opposite.
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