Entry 2 senses · 2 variants Webster, 1913 Superfete · Su·per·fete · IPA v. i. v. t. 01 v. i. To superfetate. 1. To superfetate.[Obs.] 02 v. t. To conceive (another fetus) after a former conception. 1. To conceive (another fetus) after a former conception.[Obs.]