Meanings
Synonyms & antonyms
nounSynonym of gigantism.
Similar
More synonyms by meaning
nounexcessive size; usually caused by excessive secretion of growth hormone from the pituitary gland
Similar
Broader
Also see
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
From giant + -ism, coined in the mid 17th century. In the medical or biological sense of gigantism from the 1880s.
Full word history & related roots →Cite this entry
APA
giantism. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/giantism
MLA
“giantism.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/giantism. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “giantism,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/giantism.
Source: giantism on Wiktionary, CC BY-SA 4.0.