Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
The word quadrisyllabus could not be parsed. Trying a normal dictionary lookup:
No entries found. Showing closest matches:
quā̆drĭ-sēmus, a, um, adj. [vox hibr. from quattuor-σῆμα, sign], quadrisyllabic, containing four morae or prosodial times (gram. term): numerus, Mart. Cap. 9, § 981.
quā̆drĭ-sōmus, a, um, adj. [vox hibr. from quadrus, σῶμα], containing four bodies: SEPVLCRVM, Inscr. Rein. col. 2, 40; 43 al.