Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
sūdātōrĭus, a, um, adj. [sudo], belonging to or serving for sweating, sudatory. 
- I.  Adj.: unctiones, Plaut. Stich. 1, 3, 73: qualitas, Cassiod. Var. 2, 39 med. 
 
- II.  Subst.: sūdātōrĭum, ii, n., a sweatingbath, sweating-room, a sudatory: circa balinea ac sudatoria, Sen. Vit. Beat. 7, 2; id. Ep. 51, 6.