prenatal
pree nay tuhl
- a occurring or existing before birth
the prenatal period
- Unlike the prenatal changes, this neural waxing and waning alters not the number of nerve cells but the number of connections, or synapses, between them.
- In the first study of its kind, researchers have linked mothers' prenatal exposure to environmental pollution to lower IQ in their children by age 5.
- Earlier studies indicated that prenatal exposure to testosterone, which spikes between the 9th and 18th weeks of gestation, increases a person's sensitivity to the effects of the .