Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Intercīdōna, ae, f. [1. intercīdo], one of the three deities (Intercidona, Pilumnus, and Deverra) who protected the house of a lying-in woman against Silvanus, Varr. ap. Aug. Civ. Dei, 6, 9; cf. Voss. Verg. E. 10, 24.