from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun Severe, intractable vomiting during pregnancy, usually in the first trimester.
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- noun medicine, pathology A rare complication of
pregnancy, similar to severe morning sickness, sometimes fatal if left untreated.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun hyperemesis during pregnancy; if severe it can result in damage to the brain and liver and kidney
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From hyperemesis + Latin gravidarum ("pregnant").
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