Dictionary.com
definitions

unifoliate

[yoo-nuh-foh-lee-it, -eyt]
adjective
  1. having only one leaf.
  2. unifoliolate.

Origin of unifoliate

First recorded in 1840–50; uni- + foliate
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for unifoliate

unifoliate

adjective
  1. having a single leaf or leaflike part
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012