Chi (letter)

Chi (/ˈk, ˈx/ ;[1][2] uppercase Χ, lowercase χ; Greek: χῖ) is the twenty-second letter of the Greek alphabet.

  1. ^ "chi". The Chambers Dictionary (9th ed.). Chambers. 2003. ISBN 0-550-10105-5.
  2. ^ "chi". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)

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