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Definition of Test-tube baby
1. Noun. A baby conceived by fertilization that occurs outside the mother's body; the woman's ova are removed and mixed with sperm in a culture medium - if fertilization occurs the blastocyte is implanted in the woman's uterus.
Medical Definition of Test-tube baby
1. Popular term for a baby born after uterine implantation of a maternal ovum fertilised in vitro. (05 Mar 2000)