Pronunciation: [ɒktˈɪli͡ən] (IPA) 
Octillion is written in English orthography as "o-k-t-i-l-y-uh-n." In IPA phonetic transcription, this word is pronounced as /ɑkˈtɪljən/. The "o" is pronounced as a short "o" sound, and the "ct" is pronounced as "k-t" in quick succession. The "i" is pronounced as a short "ih" sound, the "l" is pronounced as an "L" sound, and the "y" is pronounced as a schwa sound. The word is emphasized on the second syllable, "til."
Octillion is a numerical term used to represent the quantity or value of one followed by twenty-seven zeros (10^27). It is derived from the Latin prefix "octo-" meaning eight and the suffix "-illion" denoting a large, indeterminate number. As per the international numbering system, octillion is equal to 1,000,000,000,000,000,000,000,000,000.
The concept of octillion often arises in discussions involving enormous quantities, especially in scientific, economic, or theoretical contexts. Due to its staggering value, this number is typically utilized when counting or quantifying beyond the capacity of human comprehension. It is commonly employed to express astronomical figures such as the estimated number of stars in the visible universe or to calculate incredibly vast distances or amounts.
When examining economic figures, octillions may be used to represent the monetary worth of unimaginably prosperous ventures or hypothetical situations. In scientific research or mathematical calculations, octillions can help convey the enormity of data, measurements, or calculations that exceed the reach of traditional units or larger numerical scales.
The concept of octillion plays an essential role in emphasizing the extreme magnitude of quantities that surpass everyday comprehension. Its incorporation into important domains enables more effective communication and understanding when pondering abstract notions, exceptionally vast quantities, or extraordinary scales of measurement.
A number produced by raising a million to the eighth power; in Eng. System of notation, 1 followed by 48 ciphers; in the F. and It. Systems, 1 followed by 27 ciphers.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
The word "octillion" is derived from the Latin prefix "octo-" meaning "eight" and the suffix "-illion", which is based on the French word "illion" and ultimately derived from the Latin "mille" meaning "thousand". In this case, the prefix "octo" implies that "octillion" is equal to 10^27 (1 followed by 27 zeros), or one thousand raised to the power of eight.
