- See Also:
- - septentrion
  - septet
  - septi-
  - septic
  - septic sore throat
  - septic tank
  - septicaemia
  - septicemia
  - septicemic plague
  - septilateral
  - septillion
  - septimal
  - septimana
  - septime
  - Septimus
  - septisyllable
  - septivalent
  - septuagenarian
  - septuagenary
  - Septuagesima
  - Septuagint
- Recent searches:
- View All

septillion

UK:^*^*UK and possibly other pronunciationsUK and possibly other pronunciations/sɛpˈtɪljən/US:USA pronunciation: respellingUSA pronunciation: respelling(sep til′yən)

sep•til•lion (sep til′yən),USA pronunciation n., pl. -lions, (as after a numeral) -lion, adj.
n.

a cardinal number represented in the U.S. by 1 followed by 24 zeros, and in Great Britain by 1 followed by 42 zeros.

adj.

amounting to one septillion in number.

French, equivalent. to sept seven + -illion, as in million
1680–90

sep•til′lionth, n., adj.

Collins Concise English Dictionary © HarperCollins Publishers::

septillion /sɛpˈtɪljən/ n ( pl -lions, -lion)

(in Britain, France, and Germany) the number represented as one followed by 42 zeros (10⁴²)
(in the US and Canada) the number represented as one followed by 24 zeros (10²⁴)Brit word: quadrillion

Etymology: 17th Century: from French, from sept seven + -illion, on the model of millionsepˈtillionth adj , n

'septillion' also found in these entries (note: many are not synonyms or translations):

quadrillion - sextillion

Forum discussions with the word(s) "septillion" in the title:

No titles with the word(s) "septillion".

Visit the English Only Forum.
Help WordReference: Ask in the forums yourself.

Look up "septillion" at Merriam-Webster
Look up "septillion" at dictionary.com

Go to Preferences page and choose from different actions for taps or mouse clicks.

URL: https://www.wordreference.com/definition/septillion

⇱ septillion - WordReference.com Dictionary of English

septillion