Quintillionth Definition

kwĭn-tĭlyənth
noun
The ordinal number matching the number quintillion in a series.
American Heritage
One of a quintillion equal parts.
American Heritage
The person or thing in the quintillionth position.
Wiktionary
Synonyms:
  • one-quintillionth
adjective
The ordinal form of the number one quintillion.
Wiktionary

Other Word Forms of Quintillionth

Noun

Singular:
quintillionth
Plural:
quintillionths

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quintillionth