fo·ra·men (f?-r??m?n)n. pl. fo·ram·i·na (-r?m??-n?) or fo·ra·mens An opening or orifice, as in a bone or in the covering of the ovule of a plant.[Latin for?men, an opening, from for?re, to bore.]fo·ram?i·nal (-r?m??-n?l), fo·ram?i·nous (-n?s) adj.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.foramen (f??re?m?n) n, pl -ramina (-?ræm?n?) or -ramens (Anatomy) a natural hole, esp one in a bone through which nerves and blood vessels pass[C17: from Latin, from for?re to bore, pierce] foraminal adjCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014fo?ra?men (f??re? m?n) n., pl. -ra?mens, -ram?i?na (-?ræm ? n?) a small opening, orifice, or perforation, as in a bone or in the ovule of a plant. [1665?75;