nonillion

Noun

Meaning

According to the French and American notation, a thousand octillions, or a unit with thirty ciphers annexed; according to the English notation, a million octillions, or a unit with fifty-four ciphers annexed. See the Note under Numeration.

Source: Webster's dictionary

Synonyms

multiple hundred dozen fifty manifold crowded divers myriad quadrillion billion million multitudinous zillion galore forty
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Antonyms

one few pennyworth halfpenny defined band of finite number of
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Close letter words and terms

nonignorable nonignorant nonill nonillionth nonilliterate nonillness