hypothyroidism

noun

hy·​po·​thy·​roid·​ism ˌhī-pō-ˈthī-ˌrȯi-ˌdi-zəm 

: deficient activity of the thyroid gland

also : a resultant bodily condition characterized by lowered metabolic rate and general loss of vigor

Examples of hypothyroidism in a Sentence

Recent Examples on the Web

Mental health conditions such as depression can sap both energy and motivation, while medical issues including hypothyroidism, anemia and chronic fatigue syndrome can also cause debilitating symptoms. — Daryl Austin, USA Today, 21 Aug. 2026

During a month in detention, Khan was denied access to necessary medications for hypothyroidism, high blood pressure and glaucoma, according to testimony by her daughter, Riya Khan. — Sofia Williams, Sacbee.com, 18 Aug. 2026

Brain fog has become an important part of the conversation for many conditions, including perimenopause and hypothyroidism. — Trisha Pasricha, Washington Post, 10 Aug. 2026

If none of these causes resonate, there are more common causes, including water quality (particularly hard water), as well as underlying health issues like hypothyroidism. — Dominic Cadogan, Glamour, 25 July 2026

Word History

Etymology

International Scientific Vocabulary

First Known Use

1905, in the meaning defined above

Rhymes for hypothyroidism

• absolutism
• adventurism
• aestheticism
• africanism
• agnosticism
• alcoholism
• anachronism
• anglicanism
• antagonism
• arianism
• asceticism
• astigmatism

Kids Definition

hypothyroidism

noun

hy·​po·​thy·​roid·​ism ˌhī-pō-ˈthī-ˌrȯid-ˌiz-əm 

: too little activity of the thyroid gland

also : the abnormal bodily condition that results from this

hypothyroid

-ˌrȯid

adjective

Medical Definition

hypothyroidism

noun

hy·​po·​thy·​roid·​ism -ˌiz-əm 

: deficient activity of the thyroid gland

also : a resultant bodily condition characterized by lowered metabolic rate and general loss of vigor