Found 2 items, similar to superfetate.
English → English (WordNet) Definition: superfetate superfetate v : conceive when a fetus is already present in the uterus
English → English (gcide) Definition: Superfetate Superfetate \Su`per*fe"tate\, v. i. [L. superfetare; super above, over + fetare to bring forth.] To conceive after a prior conception, but before the birth of the offspring. [1913 Webster] The female . . . is said to superfetate. --Grew. [1913 Webster]