[ rey-muh s ]
/ ˈreɪ məs /

noun, plural ra·mi [rey-mahy] /ˈreɪ maɪ/. Botany, Zoology, Anatomy.

a branch, as of a plant, vein, bone, etc.

Origin of ramus

1795–1805; < Latin rāmus branch, twig, bough; akin to rādīx root1 (see radix)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Examples from the Web for ramus

British Dictionary definitions for ramus

/ (ˈreɪməs) /

noun plural -mi (-maɪ)

the barb of a bird's feather
either of the two parts of the lower jaw of a vertebrate
any part or organ that branches from another part

Word Origin for ramus

C19: from Latin: branch
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

Medical definitions for ramus

[ rāməs ]

n. pl. ra•mi (-mī′)

Any of the primary divisions of a nerve or blood vessel.
A part of an irregularly shaped bone that is thicker than a process and forms an angle with the main body, especially the ascending part of the lower jaw that makes a joint at the temple.
Any of the primary divisions of a cerebral sulcus.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.