Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
tractŭōsus, a, um, adj. [traho], that draws to itself, clammy, gluey, viscous (late Lat.): sudor crassus et tractuosus atque viscosus, Cael. Aur. Acut. 2, 32, § 167: semen, Theod. Prisc. 4, 2 med.