† proscissionObs.rare—0.|prəʊˈsɪʃən| [ad. L. prōscissiōn-em breaking up (of land), first ploughing, f.prō, pro-1 + scind-ĕre, sciss-um to break or tear asunder.] (See quot.) 1656Blount Glossogr., Procission[error for proscission], a cutting up, a tilling, a ploughing, a manuring of land.