Definition/Meaning of undecillion

• English - Cardinal numeral: undecillion ( US; modern British & Australian , short scale ) 10 36 . ( dated British & Australian , long scale ) 10 66 . See also ( short and long scale ) Previous : decillion . Next : duodecillion . Synonyms 10 36 : a long scale sextillion Translations Related terms decillion
• English - Etymology: From un (one)+ dec (ten) + -illion
• English - Pronunciation: Rhymes: -ɪljən