The Collaborative International Dictionary
Pseudocoelia
Pseudocoelia \Pseu`do*c[oe]"li*a\, n. [NL., fr. Gr. pseydh`s
false + ? hollow.] (Anat.)
The fifth ventricle in the mammalian brain. See Ventricle.
--B. G. Wilder.
Wiktionary
pseudocoelia
n. (context anatomy dated English) The fifth ventricle in the mammalian brain.