noun
- Nausea early in the day; a characteristic symptom in the early months of pregnancy. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). morning sickness. Retrieved September 22, 2026, from http://smartdefine.org/morning_sickness/definitions/1246690 |
| Chicago | WordNet. 2010. "morning sickness" http://smartdefine.org/morning_sickness/definitions/1246690 (accessed September 22, 2026). |
| Harvard | WordNet 2010, morning sickness, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/morning_sickness/definitions/1246690>. |
| MLA | WordNet. "morning sickness" 23 October 2010. Web. 22 September 2026. <http://smartdefine.org/morning_sickness/definitions/1246690> |