the branch of botany dealing with ferns
Webster’s New World College Dictionary, Fourth Edition, compiled by the
editors of Webster’s New World Dictionaries. Copyright © 2010 by Houghton
Mifflin Harcourt. Published by Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'pteridology'
< Gr pteris
), fern (akin to pteron
: from the featherlike shape) + -logy