flat-earthism

noun

The belief in, or advocacy for, the theory that the planet Earth is flat.

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Meanings

nounflat-earthism (uncountable)
  1. uncountableThe belief in, or advocacy for, the theory that the planet Earth is flat.

Origin

From flat-earth + -ism.

Full word history & related roots →

Translations

Chinese Mandarin 地平論 /地平论
  • 地平論 /地平论 (dìpínglún)Translations
French platisme
  • platismeTranslations
Italian terrapiattismo
  • terrapiattismoTranslations
Portuguese terraplanismo
  • terraplanismoTranslations
Spanish terraplanismo
  • terraplanismoTranslations
Cite this entry
APA

flat-earthism. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/flat-earthism

MLA

“flat-earthism.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/flat-earthism. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “flat-earthism,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/flat-earthism.

Source: flat-earthism on Wiktionary, CC BY-SA 4.0.