from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun The large, cone-shaped mass of gray matter that forms the central core of the cerebral hemisphere, whose outermost convex base is formed by the putamen and whose innermost apical part consists of the globus pallidus.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a basal ganglion shaped like a lens and including the outer reddish putamen and the inner pale yellow pallidum
from The American Heritage® Dictionary of the English Language, 4th Edition
[From its somewhat biconvex appearance when viewed from certain angles.]
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