nausea occurring in the early part of the day, especially as a characteristic symptom in the first months of pregnancy.
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Origin of morning sickness
First recorded in 1875–80
Words nearby morning sickness
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for morning sickness
nausea occurring shortly after rising: an early symptom of pregnancy
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Medical definitions for morning sickness
Nausea and vomiting upon rising in the morning, especially during early pregnancy.nausea gravidarum
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.