2 definitions found
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
Superfetation \Su`per*fe*ta"tion\, n. [Cf. F. superf['e]tation.]
(Physiol.)
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.
From WordNet r 1.6 [wn]:
superfetation
n : fertilization of a second ovum after a pregnancy has begun;
results in two fetuses of different ages in the uterus at
the same time; "superfetation is normal in some animal
species"
more about superfetation
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