billionth
noun
- reciprocal of a billion (short scale) or of one thousand million (long scale)
adjective
- reciprocal of a billion (short scale) or of one thousand million (long scale)
Wiktionary
Pronunciation: /ˈbɪl.i.ənθ/ / /ˈbɪl.jənθ/
adj
Etymology: Etymology tree English billion English -th English billionth From billion + -th (ordinal suffix).
- The ordinal form of the number one billion.
noun
Etymology: Etymology tree English billion English -th English billionth From billion + -th (ordinal suffix).
- The person or thing in the billionth position.
- One of a billion equal parts of a whole.
“That is an extraordinary achievement for a spiky ball of genetic material coated in fatty chemicals called lipids, and which measures 80 billionths of a metre in diameter. Humanity has been brought low by a very humble assailant.”