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Billon vs Septillion - What's the difference?

billon | septillion |

As a noun billon

is any of several alloys of precious metals and base metals that is used (where legal) to make coins, medals etc.

As a numeral septillion is

(US; modern British & Australian, short scale) A trillion trillion: 1 followed by 24 zeros, 1024.

billon

English

Noun

(wikipedia billon) (en noun)
  • Any of several alloys of precious metals and base metals that is used (where legal) to make coins, medals etc.
  • septillion

    English

    Numeral

    (head)
  • (US; modern British & Australian, ) A trillion trillion: 1 followed by 24 zeros, 1024.
  • (dated British & Australian, ) A billion quintillion: 1 followed by 42 zeros, 1042.
  • See also

    * (short and long scale) Previous': sextillion. ' Next : octillion.

    Synonyms

    * 1024: a quadrillion * 1042: a tredecillion