asymptomatic,a.Path.|əsɪmptəʊˈmætɪk| [f. a- prefix 14 + symptomatic a.] Without symptoms; producing or exhibiting no symptoms. 1932in Dorland Med.Dict. (ed. 16).1962Lancet 13 Jan. 67/1 Splenectomy has not been indicated to control these asymptomatic blood changes.