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Meaning of mea culpa*

me•a cul•pa

Pronunciation: (me'ä kool'pä Eng. mā'&schwa kul'p&schwa, mē'&schwa), [key]
— Latin. Latin.
  1. through my fault; my fault (used as an acknowledgment of one's responsibility).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.