octodecillion

[ ok-toh-di-sil-yuhn ]

noun

, plural oc·to·de·cil·lions, (as after a numeral) oc·to·de·cil·lion.

1. a cardinal number represented in the U.S. by 1 followed by 57 zeros, and in Great Britain by 1 followed by 108 zeros.

adjective

1. amounting to one octodecillion in number.

Other Words From

• octo·de·cillionth adjective noun

Word History and Origins

Origin of octodecillion¹

1935–40; < Latin octōdec ( im ) eighteen + English -illion, as in million