1. Bearing numerous leaves; leafy.
2. Of, relating to, or resembling a leaf.
3. Of or relating to a lichen whose thallus is flat and leafy.

[Latin foliōsus, from folium, leaf. See folium.]

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.