from the GNU version of the Collaborative International Dictionary of English
- n. a deep cerebral fissure separating the frontal from the temporal lobe. See Illust. under Brain.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the deepest and most prominent of the cortical fissures; separates the frontal lobes and temporal lobes in both hemispheres
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