quintillionth

Definition of Quintillionth in English :

1. one-quintillionth, quintillionth

one part in a quintillion equal parts

2. quintillionth

the ordinal number of one quintillion in counting order

WordNet Lexical Database for English. Princeton University. 2010.

Quintillionth

noun plural -lions or -lion

1.

(in Britain, France, and Germany) the number represented as one followed by 30 zeros (1030)

. US and Canadian word: nonillion

2.

(in the US and Canada) the number represented as one followed by 18 zeros (1018)

. Former Brit word: trillion

noun

1.

the number represented by 1 followed by 18 zeros

2. British

the number represented by 1 followed by 30 zeros

adjective

3.

amounting to one quintillion in number

n.

1. The ordinal number matching the number quintillion in a series.

2. One of a quintillion equal parts.