gigantism
noun
gi·gan·tism
jī-ˈgan-ˌti-zəm 
jə-;
ˈjī-gən-
1
2
: development to abnormally large size
3
: excessive vegetative growth often accompanied by the inhibiting of reproduction
Examples of gigantism in a Sentence
the gigantism that is this newest ocean liner is impossible to describe
Recent Examples on the Web
As the Seahawks hoisted the trophy on the field, amid the gigantism and confetti cannons and surfeit on display, a sense of perspective seemed to have been restored.
—
Sally Jenkins, The Atlantic, 9 Feb. 2026
Whatever showy gigantism the Kennedy Center was burdened with at the start, there will almost surely be more of it after he’s done.
—Christopher Robbins, Curbed, 9 Feb. 2026
In April, Gabriel was diagnosed with gigantism, caused by high levels of growth hormone.
—Susan Young, PEOPLE, 29 Oct. 2025
Cut off from outside populations, Rome’s freshwater crabs developed a form of gigantism.
—Krista Langlois, Smithsonian Magazine, 7 July 2025
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Sally Jenkins, The Atlantic, 9 Feb. 2026
Whatever showy gigantism the Kennedy Center was burdened with at the start, there will almost surely be more of it after he’s done.
—Christopher Robbins, Curbed, 9 Feb. 2026
In April, Gabriel was diagnosed with gigantism, caused by high levels of growth hormone.
—Susan Young, PEOPLE, 29 Oct. 2025
Cut off from outside populations, Rome’s freshwater crabs developed a form of gigantism.
—Krista Langlois, Smithsonian Magazine, 7 July 2025
See All Example Sentences for gigantism
Cite this Entry
“Gigantism.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/gigantism. Accessed 17 Feb. 2026.
Copy CitationMedical Definition
gigantism
noun
gi·gan·tism
jī-ˈgan-ˌtiz-əm
jə-; ˈjī-gən-
jə-; ˈjī-gən-
: development to abnormally large size from excessive growth of the long bones accompanied by muscular weakness and sexual impotence and usually caused by hyperpituitarism before normal ossification is complete
called also macrosomia
compare acromegalyLove words? Need even more definitions?
Merriam-Webster unabridged
