Pronunciation: (mī), [key]
(a form of the possessive case of I used as an attributive adjective): My soup is cold.
Also,my-my.(used as an exclamation of mild surprise or dismay): My, what a big house this is! My-my, how old he looks!
var. of myo- before some vowels: myalgia.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.