rhizoverbBeta
DictionarychiGreek letter
noun

chi

CHEE/kaɪ/

The twenty-second letter of the Greek alphabet.

The tiles display uppercase and lowercase forms of the Greek letter chi.

Two simple ivory letter tiles displaying uppercase Greek chi Χ and lowercase Greek chi χ, side by side, making the letter itself the sole subject.
Etymology
chiGreekchi, the letter Χ

The Greek letter name also supplied an image of crossing: its X shape led to words for things placed crosswise or marked with an X.

In context

Stephanie Meerse6:27
the chi squared equals the sum of the observed minus expected quantity squared divided by the expected value
Chi Squared Test of Independence

More examples

  • Lowercase chi appears in the equation.
  • The alphabet chart places chi after phi.
  • He practices writing uppercase and lowercase chi.

Forms

chi · chis

Similar words

xi
Xi is a different Greek letter, the fourteenth rather than the twenty-second.