SUPERFECUNDATION
Su`per*fec`un*da"tion, n. (Physiol.)

Defn: Fertilization of two ova, at the same menstruation, by two different acts of coition.

SUPERFECUNDITY
Su`per*fe*cun"di*ty, n.

Defn: Superabundant fecundity or multiplication of the species.

SUPERFETATE Su`per*fe"tate, v. i. Etym: [L. superfetare; super above, over + fetare to bring forth.]

Defn: To conceive after a prior conception, but before the birth of
the offspring.
The female . . . is said to superfetate. Grew.

SUPERFETATION
Su`per*fe*ta"tion, n. Etym: [Cf. F. superfétation.] (Physiol.)

Defn: The formation of a fetus at the result of an impregnation occurring after another impregnation but before the birth of the offspring produced by it. This is possible only when there is a double uterus, or where menstruation persists up to the time of the second impregnation. In then became a superfetation upon, and not an ingredient in, the national character. Coleridge.

SUPERFETE
Su`per*fete", v. i.

Defn: To superfetate. [Obs.]