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morning sickness n nausea and vomiting that occurs typically in the morning esp. during the earlier months of pregnancy
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nausea and vomiting occurring during early pregnancy. In some women the symptoms disappear if a small amount of food is eaten before rising in the morning. Compare hyperemesis gravidarum.
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a type of nausea seen in women early in pregnancy; called also emesis gravidarum, nausea gravidarum, and vomiting of pregnancy.Medical dictionary. 2011.