Noun | 1. | palingenesis - emergence during embryonic development of various characters or structures that appeared during the evolutionary history of the strain or species Synonyms: recapitulation Antonyms: caenogenesis, cainogenesis, cenogenesis, kainogenesis, kenogenesis - introduction during embryonic development of characters or structure not present in the earlier evolutionary history of the strain or species (as addition of the placenta in mammalian evolution) |