יוֹן ᴵᴵ m.n. FW ion. [Gk. ion neuter of ion (= going), pres. part. of ienai (= to go), from IE base * i- (= to go), whence also L. ire (= to go), iter (= a journey). See ‘itinerate’ in my CEDEL. The word ion was introduced into electricity by the English physicist and chemist Michael Faraday, 1791–1867.] Derivative: יִנֵּן.