Xi is the fourteenth letter of the Greek alphabet (Ξ, ξ), used in mathematics and science to represent various quantities.
In English contexts, xi appears mainly in technical writing or when discussing Greek: The variable xi denotes an unknown in the equation.
As a Roman numeral, XI represents eleven.
1. numeral — Roman, Of ancient Italy's capital; numeral (Symbol denoting quantity); IX (Nine in numerals); V (Letter for five); IV · II · I · L · C · D · M · notation · clock · chapter
2. Jinping — China, East Asian superpower; president (Elected leader of nation); leader (One who guides others); CCP (China's sole political power); Beijing · chairman · PRC · Chinese · politics · governance · party · state · power · government
Opposites
NUMERAL SYSTEMXI ≠ 11 Number after ten; Arabic numerals · decimal notation
NUMERICAL VALUEXI ≠ 0 Numeral for nothing; zero · I · nil · nothing
Categories
Roman numerals: I, II, IV, V, IX; numbers: one, two, four, three, 0
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- Used worldwide · Timeless · Everyday, not technical · Rated G