Meanings
plural sextillions
- AustraliaUKdatedlong scaleA million quintillion: 1 followed by 36 zeros, 10³⁶.
1 more example
[W]e take now to name them by Millions of Millions of Millions, it is hard to go beyond eighteen, or at moſt four and twenty decimal Progreſſions, without confuſion. But to ſhew how much diſtinct Names conduce to our well reckoning, or having uſeful Ideas of Numbers, let us ſet all these following Figures in one continued Line, as the Marks of one Number: v. g. Nonilions. 857324. Octilions. 162486. Septilions. 345896. Sextilions. 437916. Quintilions. 423147. Quatrilions. 248106. Trilions. 235421. Bilions. 261734. Milions. 368149. Vnites. 623137.
1689 (indicated as 1690), [John Locke], “Of Number”, in An Essay Concerning Humane Understanding. […], London: […] Eliz[abeth] Holt, for Thomas Basset, […], →OCLC, book II, § 6, page 99
Synonyms & antonyms
numeralA trillion billion: 1 followed by 21 zeros, 10²¹.
a short scale undecillion
Origin
From Classical Latin sextus (“sixth”) + -illion; originally the sixth power of a million, 10³⁶. Compare slightly earlier quintillion, Middle French sixlion (1484) and French sextillion (1765). First attested in 1689 in John Locke’s An Essay Concerning Human Understanding (see the quotation).
Full word history & related roots →Translations
Dutch triljard, sextiljoen
- triljarda trillion billion, 1021 — see also trilliard
- sextiljoena million quintillion, 1036 — see also undecillion
Esperanto triiliardo, sesiliono
- triiliardoa trillion billion, 1021 — see also trilliard
- sesilionoa million quintillion, 1036 — see also undecillion
Finnish triljardi, sekstiljoona
- triljardia trillion billion, 1021 — see also trilliard
- sekstiljoonaa million quintillion, 1036 — see also undecillion
French trilliard, frantic
- trilliarda trillion billion, 1021 — see also trilliard
- frantica million quintillion, 1036 — see also undecillion
- sextilliona million quintillion, 1036 — see also undecillion
German Trilliarde, Sextillion
- Trilliardea trillion billion, 1021 — see also trilliard
- Sextilliona million quintillion, 1036 — see also undecillion
Hungarian trilliárd
- trilliárda trillion billion, 1021 — see also trilliard
Icelandic trilljarður
- trilljarðura trillion billion, 1021 — see also trilliard
Italian triliardo
- triliardoa trillion billion, 1021 — see also trilliard
Japanese 十垓, 一澗
- 十垓 (jū-gai)a trillion billion, 1021 — see also trilliard
- 一澗 (ikkan)a million quintillion, 1036 — see also undecillion
Korean 십해
- 십해 (siphae)a trillion billion, 1021 — see also trilliard
Malay sekstilion
- sekstiliona trillion billion, 1021 — see also trilliard
Polish tryliard
- tryliarda trillion billion, 1021 — see also trilliard
Portuguese sextilhão
- sextilhãoa trillion billion, 1021 — see also trilliard
Russian секстиллио́н
- секстиллио́н (sekstillión)a trillion billion, 1021 — see also trilliard
Spanish mil trillones, sextillón
- mil trillonesa trillion billion, 1021 — see also trilliard
- sextillóna trillion billion, 1021 — see also trilliard
- sextillóna million quintillion, 1036 — see also undecillion
Turkish sekstilyon
- sekstilyona trillion billion, 1021 — see also trilliard
Welsh secstiliwn
- secstiliwna trillion billion, 1021 — see also trilliard
Rhymes & wordplay
Rhymes with sextillion
Cite this entry
sextillion. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/sextillion
“sextillion.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/sextillion. Accessed November 3, 2026.
WatkinsX Dictionary, s.v. “sextillion,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/sextillion.
Source: sextillion on Wiktionary, CC BY-SA 4.0.