The floor of the fourth ventricle of the brain, formed by the ventricular surface of the rhombencephalon.
- rhomboid ligament,
- rhomboidal sinus,
- rhonchal fremitus
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.