The cardinal number equal to 1057 .
(chiefly british) The cardinal number equal to 10108 .
(US; modern British & Australian, short scale, rare) 1057.
(dated British & Australian, long scale, rare) 10108.
Origin of octodecillion
- Latin octōdecim eighteen octodecimo (m)illion
From American Heritage Dictionary of the English Language, 5th Edition