Definition of "cacuminal" []

• Articulated with the tip of the tongue turned back and up toward the roof of the mouth; retroflex. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "—The folium vermis (folium cacuminis; cacuminal lobe) is a short, narrow, concealed band at the posterior extremity of the vermis, consisting apparently of a single folium, but in reality marked on its upper and under surfaces by secondary fissures."