ten-thousandth
Definition
Noun 1. A fractional part equal to one of ten thousand equal divisions of a whole: The ordinal number for the position corresponding to 10,000 in a sequence; the item occupying this position. 2. The quotient of unity divided by ten thousand (1/10,000 or 0.0001): A precise mathematical fraction representing one part out of ten thousand total parts.
Usage Examples
- As a fractional quantity:
- A millimeter is one ten-thousandth of a meter.
- The margin of error was less than three ten-thousandths.
- As an ordinal position:
- She was the ten-thousandth visitor to the website this month.
- This coin is the ten-thousandth to be minted at the new facility.
Advanced Usage
- In decimal form: The fraction one ten-thousandth is written as 0.0001 in decimal notation.
- The concentration was measured at 5.7 ten-thousandths, or 0.00057.
- In percentage terms: One ten-thousandth is equivalent to 0.01% (one hundredth of one percent).
- The impurity level was a mere 0.01%, or one ten-thousandth.
Variants and Related Words
- Ten-thousandth can function as an adjective when describing a fractional unit.
- They measured a ten-thousandth part of the sample.
- Ten-thousandfold (adj. & adv.): Multiplied by ten thousand; consisting of ten thousand parts.
- Ten thousand (n., adj.): The cardinal number 10,000.
Synonyms
- 0.0001 (decimal representation)
- 1/10,000 (fractional representation)
- One part in ten thousand
Notes on Meaning
- The primary meaning is mathematical and quantitative, denoting an extremely small fraction.
- Its use as an ordinal number (e.g., the ten-thousandth customer) is derived from this fractional sense, indicating a single, specific item within a sequence of 10,000.
Noun
-
one part in ten thousand equal parts
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