1. An overlaying structure. 2. SYN: tectorial membrane of cochlear duct. [L. an overlaying surface (plaster, stucco), fr. tego, pp. tectus, to cover]
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tec·to·ri·um (tek-torґe-əm) pl. tectoґria [L. “roofâ€] membrana tectoria ductus cochlearis.Medical dictionary. 2011.