| English adjective: quadrillionth | |||
| 1. | quadrillionth the ordinal number of one quadrillion in counting order | ||
| Similar | ordinal | ||
| Antonyms | cardinal | ||
| English noun: quadrillionth | |||
| 1. | quadrillionth (quantity) one part in a quadrillion equal parts | ||
| Synonyms | one-quadrillionth | ||
| Broader (hypernym) | common fraction, simple fraction | ||