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nounone part in a billion equal parts
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nounposition 1,000,000,000 in a countable series of thingstype of:
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adjectivethe ordinal number of one billion in counting order
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Definition that contains billionth
- a a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation
- ng one billionth (1/1,000,000,000) gram
- angstrom a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation
- nanosecond one billionth (10^-9) of a second; one thousandth of a microsecond
- nanometre a metric unit of length equal to one billionth of a meter
- nm a metric unit of length equal to one billionth of a meter
- micromillimetre a metric unit of length equal to one billionth of a meter
- nanometer a metric unit of length equal to one billionth of a meter
- nanogram one billionth (1/1,000,000,000) gram
- abhenry a unit of inductance equal to one billionth of a henry