Roman ‘special deity’ which according to Varro (ant. rer. div. 116 Cardauns) is mentioned in Christian polemic (Tert. Ad nat. 2,11; Aug. civ. 4,21) together with Adeona, and is derived from abire or adire. According to Varro both are deities of childhood; the etymological derivation probably refers to the first attempts to walk. The problems associated with all indigitamenta apply to the name.
B. Cardauns, M. Terentius Varro. Antiquitates rerum divinarum II (commentary), 1976, 206.