Meaning & use
septillion
Last updated
a number equal to 1 followed by 24 zeros (10^24) in the short scale used in the US and modern British English.
See it in a sentence
The number of stars in the observable universe is estimated to be in the septillions.
Scientists calculated that roughly a septillion atoms could fit within a single grain of salt.
A note on using this word
In the older 'long scale' still used in some countries, septillion refers to 10^42 instead, so context matters when the number appears in international sources.
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