Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
1. prōtractus, a, um, Part., from protraho.
‡ 2. prōtractus, ūs, m. [protraho], a prolonging, protraction: LONGI, Inscr. Amadut. Anecd. Litt. 2, p. 480.