Meaning of lepto

lep•to

Pronunciation: (lep'tō), [key]
— n. Informal.
  1. leptospirosis.

lepto-

Pronunciation: [key]
  1. a combining form meaning “thin,” “fine,” “slight,” used in the formation of compound words: leptophyllous.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.