“+ noun
Etymology: Medieval Latin superfetation-, superfetatio, from Latin superfetatus (past participle of superfetare to conceive anew while still with young, from super- + fetare to bring forth young, hatch, from fetus, foetus act of bringing forth, young) + -ion-, -io -ion — more at fetus
1. : successive fertilization of two or more ova of different ovulations resulting in the presence of embryos of unlike ages in the same uterus and occurring normally in various viviparous fishes and sometimes claimed to take place anomalously in mammals including man — compare superfecundation
2. : fertilization of an ovule by two or more kinds of pollen
3. : the process or product of the production or accretion of one thing upon another especially in an uninterrupted superabundant cumulative development
the close, technical style in which they make their discoveries known: the dense syntax and superfetation of ideas — A.J.Carr
a superfetation of fantasies — E.M.Forster