noun, plural quindecillions (as after a numeral) quindecillion.
a cardinal number represented in the U.S. by 1 followed by 48 zeros, and in Great Britain by 1 followed by 90 zeros.
amounting to one quindecillion in number.

1900–05; < Latin quīndec(im) fifteen + -illion (as in million)

quindecillionth, adjective, noun
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