† aˈssentionObs.rare—1. [ad. L. assensiōn-em, n. of action f.assens-ppl. stem of assentīri to assent: cf.OF.assension. See -tion, -sion, freq. interchanged in 17th c.; cf. next.] Assent. 1660Stanley Hist.Philos. (1701) 476/2 As to Assention grounded on a firm belief of any Physical dogm.