millionths
Parts per million
Millionths is the plural of millionth—the ordinal position after 999,999 others, or one of a million equal parts.
The word appears most often in measurements requiring extreme precision: The instrument measures distances to within a few millionths of an inch.
A millionth of a meter is a micrometer; a millionth of a second is a microsecond.
Fraction's bottom number
- numeratorNumber being divided
- decimalTenths-based notation
- thousandthOrdinal for 1000
- hundredthOrdinal for one hundred
tenths · parts · ratio · proportion · percentage · division · segment · slice
Quantity approaching zero
- minusculeExtremely small in size
- microscopicToo small for eyes
- traceMinute remnant or pursue
- particleMinute piece of matter
speck · fraction · sliver · iota · negligible · imperceptible · vanishingly · incremental
Tenths-based notation
- exponentSuperscript showing power
- mantissaLogarithm's fractional component
- micro-Denotes extreme smallness
- logarithmExponent-determining mathematical operation
notation · reciprocal · quantitative · numerical · coefficient
Millionth of a meter
- micronMillionth of a meter
- nanometerMetric unit, billion-fold smaller
- caliperTool measuring thickness or diameter
- vernierAuxiliary scale for fractions
gauge · metrology · precision · accuracy · tolerance · calibration · resolution · instrumentation
denominator
Fraction's bottom number
- numeratorNumber being divided
- decimalTenths-based notation
- thousandthOrdinal for 1000
hundredth · tenths · parts · ratio · proportion · percentage · division · segment · slice · piece
infinitesimal
Quantity approaching zero
- minusculeExtremely small in size
- microscopicToo small for eyes
- traceMinute remnant or pursue
particle · speck · fraction · sliver · iota · negligible · imperceptible · vanishingly · incremental · minute
decimal
Tenths-based notation
- exponentSuperscript showing power
- mantissaLogarithm's fractional component
- micro-Denotes extreme smallness
logarithm · notation · reciprocal · quantitative · numerical · coefficient
micrometer
Millionth of a meter
- micronMillionth of a meter
- nanometerMetric unit, billion-fold smaller
- caliperTool measuring thickness or diameter
vernier · gauge · metrology · precision · accuracy · tolerance · calibration · resolution · instrumentation · graduation
- place valueplace value, ones, tens, hundreds, thousands