"quadrillionth" in the noun sense
1. one-quadrillionth, quadrillionth
one part in a quadrillion equal parts
"quadrillionth" in the adjective sense
1. quadrillionth
the ordinal number of one quadrillion in counting order
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License