thousandth

numerator

Number being divided

• denominatorFraction's bottom number
• decimalTenths-based notation
• milli-Metric prefix for thousandth

part · portion · segment · division · slice · percentage · ratio · proportion · share · fractional

minuscule

Extremely small in size

• tinyExtremely small in size
• minuteSixtieth of an hour
• negligibleToo small to consider

imperceptible · incremental · fractional · marginal · slight · trace · sliver · hair · iota · scintilla

micrometer

Millionth of a meter

• calibrationAdjusting for measurement accuracy
• toleranceWillingness to accept difference
• accuracyDegree of correctness

measurement · exactitude · fineness · resolution · granularity · instrumentation · metrology · gauge · specificity · machining

anniversary

Recurring memorial date

• commemorationAct of honoring memory
• celebrationFestive event marking occasion
• jubileeSpecial anniversary observance

benchmark · landmark · achievement · record · iteration · repetition · attempt · visitor · customer · episode

hundredth

Ordinal for one hundred

• millionthOne part per million
• billionthOne part per billion
• tenthOrdinal for position nine-plus-one

first · second · third · fourth · fifth · sixth · seventh · eighth · ninth · twentieth

• numbersone, two, four, three, 0
• fractionshalf, halves, third, thirds, fourth
• quantitiessome, many, few, amount, several
• decimalsdecimal point, decimal place, decimal places, tenth, tenths
• ordinalsfirst, second, third, fourth, fifth
• tiny amountsbit, drop, hint, dash, dot