xi
2
9.7
The fourteenth letter of the Greek alphabet
- noun
- /zaɪ/
:
xi
- xi and xj
- xi and x
- quantum state Xi
Examples
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Xi is considered a princeling since his father, Xi Zhongxun, was a former vice-premier.
Blog text (4) -
China's ruling Communist Party has selected Xi Jinping as the country's new leader.
Blog text (4) -
The Greek letter xi is used in various scientific and mathematical contexts.
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In the Greek alphabet, the letter xi comes after the letter omicron.
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The symbol for the letter xi looks like an X with a tail.
Compounds
factor XI
- Specialized
1
6.9
A blood protein that helps blood clot, whose lack makes people bleed too much
Surface Forms
xi singular
Etymology
The word xi is the Greek letter Ξ/ξ, which originally named the sound 'ks', the same sound as the English letter 'x' in 'box'. It is the fourteenth letter of the Greek alphabet, which is why you often see xi used as a letter name in group names or as a symbol for a variable in math.