hyperpituitarism

noun

hy·per·pi·tu·ita·rism ˌhī-pər-pə-ˈtü-ə-tə-ˌri-zəm

-ˈtü-ə-ˌtri-,

-ˈtyü-

: excessive production of growth hormones by the pituitary gland

hyperpituitary

ˌhī-pər-pə-ˈtü-ə-ˌter-ē

-ˈtyü-

adjective

Word History

Etymology

International Scientific Vocabulary

First Known Use

1909, in the meaning defined above

Time Traveler

The first known use of hyperpituitarism was in 1909

See more words from the same year

Browse Nearby Words

hyperpigmentation

hyperpituitarism

hyperplane

See all Nearby Words

Cite this Entry

Style

“Hyperpituitarism.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hyperpituitarism. Accessed 31 Oct. 2025.

Copy Citation

Medical Definition

hyperpituitarism

noun

hy·per·pi·tu·ita·rism -pə-ˈt(y)ü-ət-ə-ˌriz-əm, -ˈt(y)ü-ə-ˌtriz-

: excessive production of growth hormones by the pituitary gland

Popular in Grammar & Usage

'Affect' vs. 'Effect'

Using Bullet Points ( • )

'A' or 'an'? What about before 'h'? An Indefinite Article Guide

The Difference Between 'i.e.' and 'e.g.'

What’s the difference between ‘cemetery’ and ‘graveyard’?

Popular in Wordplay

hyperpituitarism

noun

Word History

Browse Nearby Words

Cite this Entry

Medical Definition

More from Merriam-Webster

Can you solve 4 words at once?

Can you solve 4 words at once?

Word of the Day

hobgoblin