anomalistic UK /əˌnɒm.əˈlɪs.tɪk/US /əˌnɑm.əˈlɪs.tɪk/ adjective4 •Anomalous. •Irregular. •Of or pertaining to an anomaly (the angle of a body from its perihelion). •Pertaining to anomalism. formsmore anomalistic · most anomalistic