Meaning of elephant folio

el'ephant fo"lio

Pronunciation: [key]
— Print. Print.
  1. a very large folio.
  2. an American book size with a height measurement between 24 and 25 in. (61 and 63.5 cm).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.