Meaning of leptokurtic

lep•to•kurt•ic

Pronunciation: (lep"tu-kûr'tik), [key]
— adj. Statistics.
  1. (of a frequency distribution) being more concentrated about the mean than the corresponding normal distribution.
  2. (of a frequency distribution curve) having a high, narrow concentration about the mode.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.