morbidity

noun

mor·​bid·​i·​ty mȯr-ˈbi-də-tē How to pronounce morbidity (audio)
1
: the quality or state of being morbid
especially : an attitude, quality, or state of mind marked by excessive gloom
… there must have been some strange morbidity in his nature which made him take a grim pleasure in self-torture. Somerset Maugham
2
: a diseased state or symptom : ill health
Parasitic protozoans and helminths represent two major groups of infectious agents that are responsible for considerable morbidity and mortality in human and animal populations.Adel A. F. Mahmoud
also : a complication or undesirable side effect following surgery or medical treatment
Because laryngectomy results in substantial functional morbidity, including the loss of the natural voice … alternative forms of treatment have been developed. The New England Journal of Medicine
3
: the incidence of disease : the rate of illness (as in a specified population or group)
Because the young lack immune capability, the morbidity of viral upper respiratory diseases often reaches 100 percent of kittens in a litter or household.Margaret Reister
also : the incidence of complications or undesirable side effects following surgery or medical treatment
… radical prostatectomy in this setting … is associated with a very high morbidity. Phillip W. Kantoff

Examples of morbidity in a Sentence

Recent Examples on the Web
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.
Smoking is still, in 2025, the leading cause of preventable mortality and morbidity in America. The New Yorker, New Yorker, 21 Apr. 2025 Though most describe the psychological impact of birth trauma, maternal morbidity encompasses cardiovascular issues, high blood pressure, infections, especially from C-sections, diabetes, blood clots, and more. Essence, 14 Apr. 2025 Postpartum anxiety and depression are leading morbidities for postpartum women in the United States, and unfortunately are contributing to maternal mortality. Kaitlyn May, Hartford Courant, 3 Apr. 2025 The gag order, for example, even extends to CDC’s renowned morbidity and mortality weekly report or MMWR. Joshua P. Cohen, Forbes, 23 Jan. 2025 See All Example Sentences for morbidity

Word History

First Known Use

circa 1721, in the meaning defined at sense 1

Time Traveler
The first known use of morbidity was circa 1721

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Cite this Entry

“Morbidity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/morbidity. Accessed 25 Apr. 2025.

Kids Definition

morbidity

noun
mor·​bid·​i·​ty mȯr-ˈbid-ət-ē How to pronounce morbidity (audio)
plural morbidities
1
: the quality or state of being morbid
2
: the rate at which a disease occurs in a group of individuals

Medical Definition

morbidity

noun
mor·​bid·​i·​ty mȯr-ˈbid-ət-ē How to pronounce morbidity (audio)
plural morbidities
1
: a diseased state or symptom : ill health
Parasitic protozoans and helminths represent two major groups of infectious agents that are responsible for considerable morbidity and mortality in human and animal populations.Adel A. F. Mahmoud, Nature
also : a complication or undesirable side effect following surgery or medical treatment
Because laryngectomy results in substantial functional morbidity, including the loss of the natural voice … alternative forms of treatment have been developed. The New England Journal of Medicine
2
: the incidence of disease : the rate of illness (as in a specified population or group)
Because the young lack immune capability, the morbidity of viral upper respiratory diseases often reaches 100 percent of kittens in a litter or household.Margaret Reister, Cat Fancy
also : the incidence of complications or undesirable side effects following surgery or medical treatment
… radical prostatectomy in this setting … is associated with a very high morbidity. Phillip W. Kantoff, Scientific American Medicine
compare mortality sense 2

More from Merriam-Webster on morbidity

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