Skip to main content

quintillional

Pronunciation: /kwɪnˈtɪl.jə.nəl/
Definition:
1. The ordinal number symbol: 1,000,000,000,000,000,000.
2. The position in a sequence following the quintillion elements.
3. Pertaining to a magnitude of divisibility so vast, it is primarily conceptual, used in exascale computing, cryptography, and theoretical mega-astronomy.
4. Denoting a scale relevant to total possible computational operations, cryptographic spaces, or estimations of fundamental particles in the observable universe.

Significance:
• It defines the quintillionth position with systematic regularity and clarity.
• It emphasizes exascale computation, cryptographic security, and cosmic-scale enumerations.
• It identifies the order of magnitude for brute-force attack spaces in post-quantum cryptography, the number of discrete operations in exascale simulations, and estimates of subatomic particles in cosmology.
• It avoids irregular and ambiguous pronunciations.
• It simplifies expressions of near-incomprehensible scale in information theory, advanced cryptography, and hyper-computational models.
• It improves precision in discussions of cryptographic entropy, the limits of classical computation, and grand unified physical constants.
• It replaces Scandinavian-Germanic, Non-American, foreign, and Anglo-Saxon terms, similar to replacing "quintillionth".
Adjective: quintillional
Ordinal number: quintillional (1,000,000,000,000,000,000th)
Cardinal number: quintillion (1,000,000,000,000,000,000)
Examples:
• "The encryption key space is on the order of quintillional possibilities, making brute-force attacks infeasible."
• "An exascale computer can perform a quintillional operations per second."
• "Some estimates place the number of fundamental particles in the observable universe at roughly one quintillional."
• "The probability of that cosmic event recurring identically is less than one quintillional."
• "The simulation required quintillional discrete time-steps to model the phenomenon accurately."
quintillional by Dmitrio January 13, 2026
Urban Dictionary Merch
Your favorite words on things you can wear, drink from, read, or give to a friend.
The Urban Dictionary Store sells gifts you’ll have to explain.

quintillion 

A number, 1,000,000,000,000,000,000 or 10^18.
There are a quintillion drops of water in the lake.
quintillion by 5'1"Racer April 29, 2005

Quintillion 

A large number. Comes after quadrillion.
It has 21 zeros
1,00,000,000,000,000,000,000

quint- (“five”) + -illion; ie the fifth power of a million, 10.30.
After Quintillion comes sextillion, then septillion ect.
Quintillion by sharks445 September 25, 2011

Quintillion 

1. A number with 18 zeros behind it.
1,000,000,000,000,000,000-Quintillion
Quintillion by MACHaraina January 21, 2016

Quintillionaire 

n: one whose wealth is estimated at quintillion or quintillions (as of dollars)
hey, that's Quintillionaire.$

Quintillionairedom

n: a world full of quintillionaires
Quintillionairedom, did you see that mansion?$

quintillion googleplexes worth of seggers 

A term used to represent the enormous amount of problems in programming while encountering numerous seggers

See quintillion googleplex, segger
So I was programming the other day and I got a quintillion googleplexes worth of seggers!
More from Urban Dictionary

fauxstalgia 

Faux nostalgia. Faking old things in an attempt to recapture the feeling of times gone past, especially of technology that has passed.
Hipstamatic pictures, just like the vinyl-static added to digital recordings, is prime fauxstalgia
fauxstalgia by scotte61 December 16, 2010
Word of the Day on October 15, 2026

pajama casual 

Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.
We have a Zoom meeting in a few minutes and I’ll probably go pajama casual.
pajama casual by jrod-knows March 31, 2020
Word of the Day on October 14, 2026

funflation 

The recent boom in consumer spending on entertainment and experiences with a high demand running up the cost of enjoying of those experiences.
I’m trying to go to this Taylor Swift concert but the funflation has made it so impossible for me to afford tickets.
funflation by Dfree523 November 17, 2023
Word of the Day on October 13, 2026
A US deep south term for an alligator. Usually used in the Cajun dialect.
Take the big pirogue, I saw a huge swamp dog out there earlier.
swamp dog by Crystal Ambrose May 22, 2006
Word of the Day on October 12, 2026

Throat Sweats 

The feeling and build up in your mouth/throat of saliva that sometimes accompanies nausea.
Oh man those burritos gave me the throat sweats, I hope I don’t have food poisoning.
Throat Sweats by TacoFings420 April 23, 2024
Word of the Day on October 11, 2026
Being ignored by someone when making a statement or asking a question. Also known as blanked and turfed.
Person 1: Did u watch ** last nite?
Person 2:......
Person 3: O no u got aired!
aired by Pietro February 9, 2005
Word of the Day on October 10, 2026
Load more