Source : Webster's Revised Unabridged Dictionary (1913)

Mesocoele \Mes`o*c[oe]"le\, Mesocoelia \Mes`o*c[oe]"li*a\, n.
   [NL. mesocoelia. See {Meso-}, and {C[oe]lia}.] (Anat.)
   The cavity of the mesencephalon; the iter.