Meanings
plural quadrillions
- AustralianBritishUSmodernshort scaleA thousand trillion (logic: 1,000 × 1,000⁴): 1 followed by fifteen zeros, 10¹⁵.
Integrating data from all continents and major biomes, we conservatively estimate 20 × 10¹⁵ (20 quadrillion) ants on Earth, with a total biomass of 12 megatons of dry carbon.
2022 September 19, P. Schultheiss et al., “The abundance, biomass, and distribution of ants on Earth”, in Proceedings of the National Academy of Sciences of the United States of America, page 1, column 22 more examples
A man named Chris Reynolds was credited $92 quadrillion USD on his paypal account, "This unexpected influx of wealth elevated him to the status of the richest person on the planet and the only quadrillionaire to have ever existed". Following this, after the man reported this error and it was fixed, "PayPal owned up to their mistake and thanked the richest man of all time for understanding the situation, saying: 'This is obviously an error and we appreciate that Mr. Reynolds understood this was the case'".
2013 July 28, Sylvia Silverstone, “Richest Man of All-Time Dramatically Gained and Lost His Entire Fortune in Just 2 Minutes”, in MSN, archived from the original on 17 Mar 2023“I’m not sure I understand why we have to send a quadrillion-credit mission to another galaxy.” He looked fleetingly amused. “Quintillion... and we don’t have a choice, Harper. Any of us, really, but humanity especially.”
2017 November, N. K. Jemisin, Mac Walters, chapter 1, in Mass Effect Andromeda: Initiation, 1st edition (Science Fiction), Titan Books, →ISBN, →OCLC, page 32Synonyms: 1015
plural quadrillions
- excessivefigurativelyslangAny very large number, exceeding normal description.
They'd never understand — not in a quadrillion years.
1999, Beverly Lewis, A Perfect Match, Bethany House Publishers, page 233 more examples
Me, I never refuse a meal, and believe me I seen some heavy weather. I musta flown a quadrillion miles and I never did have a problem.
2000, J. D. Maples, Trojan Steers, Lomaland Books Inc, page 58The sky is so absolutely clear with a quadrillion stars.
2004, Arthur Kopecky, New Buffalo: journals from a Taos commune, UNM Press, page 143She's named after this famous singer from a quadrillion years ago.
2006, Evelyn Caro, The Flickering Attic Window, Trafford Publishing, page 8Synonyms: bajillion, bazillion, billion, dillion, fantillion, gadzillion, gagillion, gajillion
Synonyms & antonyms
numeralA thousand trillion (logic: 1,000 × 1,000⁴): 1 followed by fifteen zeros, 10¹⁵.
nounAny very large number, exceeding normal description.
a short scale septillion
Origin
- Frenchquadrillion
- Englishquadrillion
From French quadrillion, from quadri- (“four”) + -illion. By surface analysis, quadr- + -illion.
More words from French
Full word history & related roots →Translations
Catalan quadrilió
- quadrilióa million trillion, 1024 — see also septillion
Chinese Mandarin 千万亿
- 千万亿a thousand trillion (1,000,000,000,000,000); a billiard
Czech biliarda
- biliardaa thousand trillion (1,000,000,000,000,000); a billiard
Dutch biljard, quadriljoen
- biljarda thousand trillion (1,000,000,000,000,000); a billiard
- quadriljoena million trillion, 1024 — see also septillion
Esperanto biliardo, kvariliono
- biliardoa thousand trillion (1,000,000,000,000,000); a billiard
- kvarilionoa million trillion, 1024 — see also septillion
Estonian biljard, septiljon
- biljarda thousand trillion (1,000,000,000,000,000); a billiard
- septiljona million trillion, 1024 — see also septillion
Finnish biljardi, kvadriljoona
- biljardia thousand trillion (1,000,000,000,000,000); a billiard
- kvadriljoonaa million trillion, 1024 — see also septillion
French billiard, million de milliards
- billiarda thousand trillion (1,000,000,000,000,000); a billiard
- million de milliardsa thousand trillion (1,000,000,000,000,000); a billiard
- quadrilliona million trillion, 1024 — see also septillion
- milliardany very large number
- milliardsany very large number
- millionany very large number
- millionsany very large number
German Billiarde, Quadrillion
- Billiardea thousand trillion (1,000,000,000,000,000); a billiard
- Quadrilliona million trillion, 1024 — see also septillion
Greek τετρακισεκατομμύριο, επτάκις εκατομμύριο
- τετρακισεκατομμύριο (tetrakisekatommýrio)a thousand trillion (1,000,000,000,000,000); a billiard
- επτάκις εκατομμύριο (eptákis ekatommýrio)a million trillion, 1024 — see also septillion
Hungarian billiárd, ezerbillió
- billiárda thousand trillion (1,000,000,000,000,000); a billiard
- ezerbillióa thousand trillion (1,000,000,000,000,000); a billiard
Japanese 千兆, 一秭
- 千兆 (senchō)a thousand trillion (1,000,000,000,000,000); a billiard
- 一秭 (isshi)a million trillion, 1024 — see also septillion
Korean 천조
- 천조 (cheonjo)a thousand trillion (1,000,000,000,000,000); a billiard
Malay kuadrilion
- kuadriliona thousand trillion (1,000,000,000,000,000); a billiard
Persian کوادریلیون
- کوادریلیون (kuâdrilion)a thousand trillion (1,000,000,000,000,000); a billiard
Polish biliard, kwadrylion
- biliarda thousand trillion (1,000,000,000,000,000); a billiard
- kwadryliona million trillion, 1024 — see also septillion
Portuguese mil biliões, quadrilhão
- mil biliõesa thousand trillion (1,000,000,000,000,000); a billiard
- quadrilhãoa thousand trillion (1,000,000,000,000,000); a billiard
- quatrilhãoa thousand trillion (1,000,000,000,000,000); a billiard
- quadrilião m quatriliãoa million trillion, 1024 — see also septillion
- septilhãoa million trillion, 1024 — see also septillion
Romanian biliard, cvadrilion
- biliarda thousand trillion (1,000,000,000,000,000); a billiard
- cvadriliona million trillion, 1024 — see also septillion
Russian квадриллио́н, септиллио́н
- квадриллио́н (kvadrillión)a thousand trillion (1,000,000,000,000,000); a billiard
- септиллио́н (septillión)a million trillion, 1024 — see also septillion
Spanish cuatrillón, mil billones
- cuatrillóna thousand trillion (1,000,000,000,000,000); a billiard
- mil billonesa thousand trillion (1,000,000,000,000,000); a billiard
- cuatrillóna million trillion, 1024 — see also septillion
Swedish biljard, kvadriljon
- biljarda thousand trillion (1,000,000,000,000,000); a billiard
- kvadriljona million trillion, 1024 — see also septillion
Tagalog kuwadrilyon
- kuwadrilyona thousand trillion (1,000,000,000,000,000); a billiard
Turkish katrilyon, bilyar
- katrilyona thousand trillion (1,000,000,000,000,000); a billiard
- bilyara thousand trillion (1,000,000,000,000,000); a billiard
Vietnamese triệu tỷ, triệu tỷ tỷ
- triệu tỷa thousand trillion (1,000,000,000,000,000); a billiard
- triệu tỷ tỷa million trillion, 1024 — see also septillion
Welsh cwadriliwn
- cwadriliwna thousand trillion (1,000,000,000,000,000); a billiard
Rhymes & wordplay
Rhymes with quadrillion
Cite this entry
quadrillion. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/quadrillion
“quadrillion.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/quadrillion. Accessed November 4, 2026.
WatkinsX Dictionary, s.v. “quadrillion,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/quadrillion.
Source: quadrillion on Wiktionary, CC BY-SA 4.0.