Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun The large orifice in the base of the skull through which the spinal cord passes to the cranial cavity and becomes continuous with the medulla oblongata.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun the large opening at the base of the cranium through which the spinal cord passes
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
[New Latin forāmen magnum : Latin forāmen, opening + Latin magnus, large.]
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