Usage: usually capitalized S
Etymology: translation of New Latin aquaeductus Sylvii, after Sylvius (Jacques Dubois) died 1555 French anatomist
: a channel connecting the third and fourth ventricles of the brain
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/sil"vee euhs/, Anat.
a canal in the midbrain, connecting the third and fourth ventricles of the brain.
[named after Sylvius, Latinized name of Jacques Dubois (d. 1555), French anatomist]
Useful english dictionary. 2012.