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Meaning of koppa

kop•pa

Pronunciation: (kop'u), [key]
— n.
  1. a letter (&Koppa;, &koppa;) of some early Greek alphabets, occurring between pi and rho and equivalent to Latin Q: later superseded by kappa except for its use as a numeral for 90.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.