| in vitro | Within a glass, observable in a test tube, in an artificial environment. (28 Oct 1998) |
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| in vitro fertilization | <gynaecology> Fertilization outside the body in a laboratory, the term test tube baby is inaccurate since fertilization occurs in a small circular dish, not a test tube. (27 Oct 1998) |
| fertilization in vitro | Fertilization of an egg outside the body when the egg is normally fertilised in the body. (12 Dec 1998) |