hyperstimulation
noun
hy·per·stim·u·la·tion
ËŒhÄ«-pÉ™r-ËŒstim-yÉ™-ˈlÄ-shÉ™n 
variants
or hyper-stimulation
: excessive or extreme stimulation : the act or process of excessively stimulating something or someone
The donors were fertile women who underwent controlled ovarian hyperstimulation and … ultrasound-directed aspiration of oocytes for the sole purpose of donation.—
Mark V. Sauer et al.
Mark V. Sauer et al.
hyperstimulate
transitive verb
or hyper-stimulate
hyperstimulated or hyper-stimulated; hyperstimulating or hyper-stimulating
… the estrogen does indeed hyperstimulate the ovaries, sometimes causing the egg follicles to enlarge to almost cyst-like proportions.
—Natalie Angier
Natalie Angier
hyperstimulating
adjective
or hyper-stimulating
Several grown-ups said their children were at first overwhelmed by the party's hyperstimulating environment.
—Cynthia Rupe
Cynthia Rupe
Examples of hyperstimulation in a Sentence
Recent Examples on the Web
Baylis, at Dalhousie University, and others worry about risks that may not yet be apparent, to the babies themselves, the women having the babies and the women donating the eggs, such as a dangerous hyperstimulation of their ovaries.
—Rob Stein, NPR, 16 July 2025
Some people experience ovarian hyperstimulation, which can lead in rare cases to hospitalization.
—Kristen V. Brown, The Atlantic, 27 Jan. 2025
Women who donate their eggs for the pregnancy face the rare risk of potentially fatal hyperstimulation syndrome, and the long-term consequences of the fertility drugs are unknown.
—Lili Rutai, The Dial, 7 Jan. 2025
Additionally, the required hormone injections can cause ovarian hyperstimulation syndrome, where the ovaries become swollen and painful.
—New Atlas, 17 Dec. 2024
The high doses of hormones often result in side effects like bloating, nausea and vomiting and even ovarian hyperstimulation syndrome, Radenkovic says.
—Alexandra York, Forbes, 16 Dec. 2024
Beyond these concerns, the biggest thing egg donors — like IVF and egg-freezing patients — have to watch out for is a condition called ovarian hyperstimulation syndrome, which causes fluid retention in the abdomen.
—Anna North, Vox, 7 Dec. 2018
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Rob Stein, NPR, 16 July 2025
Some people experience ovarian hyperstimulation, which can lead in rare cases to hospitalization.
—Kristen V. Brown, The Atlantic, 27 Jan. 2025
Women who donate their eggs for the pregnancy face the rare risk of potentially fatal hyperstimulation syndrome, and the long-term consequences of the fertility drugs are unknown.
—Lili Rutai, The Dial, 7 Jan. 2025
Additionally, the required hormone injections can cause ovarian hyperstimulation syndrome, where the ovaries become swollen and painful.
—New Atlas, 17 Dec. 2024
The high doses of hormones often result in side effects like bloating, nausea and vomiting and even ovarian hyperstimulation syndrome, Radenkovic says.
—Alexandra York, Forbes, 16 Dec. 2024
Beyond these concerns, the biggest thing egg donors — like IVF and egg-freezing patients — have to watch out for is a condition called ovarian hyperstimulation syndrome, which causes fluid retention in the abdomen.
—Anna North, Vox, 7 Dec. 2018
Cite this Entry
“Hyperstimulation.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hyperstimulation. Accessed 16 Jan. 2026.
Copy CitationMedical Definition
hyperstimulation
noun
hy·per·stim·u·la·tion
-ËŒstim-yÉ™-ˈlÄ-shÉ™n
: excessive or increased stimulation
The donors were fertile women who underwent controlled ovarian hyperstimulation …—Mark V. Sauer et al., The New England Journal of Medicine
Mark V. Sauer et al., The New England Journal of Medicine
hyperstimulate
verb
hyperstimulated; hyperstimulating
… the estrogen does indeed hyperstimulate the ovaries, sometimes causing the egg follicles to enlarge to almost cyst-like proportions.
—Natalie Angier, The New York Times
Natalie Angier, The New York Times
Love words? Need even more definitions?
Merriam-Webster unabridged
