Dictionary
kop•pa
Pronunciation: (kop'u), [key]—
n.
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Q: later superseded by kappa except for its use as a numeral for 90.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.