billionth has definitions from the fields of mathematics,United States
1
[ noun ] (in the U.S.) position 1,000,000,000 in a countable series of things

Related terms

rank US

2
[ adjective ] the ordinal number of one billion in counting order

Related terms

ordinal

3
[ noun ] (mathematics) one part in a billion

Synonyms

one-billionth

Related terms

common_fraction

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