Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
termentum, i, n.: termentum pro eo, quod nunc dicitur detrimentum, utitur Plautus in Bacchidibus (4, 9, 5), Fest. p. 363 Müll.; cf. Plaut. l. l. Ritschl.