from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. 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.
- n. hyperemesis during pregnancy; if severe it can result in damage to the brain and liver and kidney
From hyperemesis + Latin gravidarum ("pregnant"). (Wiktionary)