the triangular subcallosal plate of commissural fibers resulting from the converging of the right and left fornix bundles that exchange numerous fibers and that curve back in the contralateral fornix to end in the hippocampus of the opposite side.
Synonym(s): commissure of fornix [TA], commissura hippocampi, delta fornicis, hippocampal commissure, psalterium, transverse fornix
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delta fornicis(dĕl′tă for′nĭ-sĭs) [L.]
A triangular surface on the lower side of the fornix.
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