millionth adj : the ordinal number of one million in counting order

1 position 1,000,000 in a countable series of things

2 one part in a million [syn: one-millionth]

English

Adjective

1. The ordinal form of the number one million.

Derived terms

• (abbreviations) 1,000,000th, 1,000,000th (also written without commas, or, in technical usage with a thin space replacing each comma)

Translations

Noun

1. The person or thing in the millionth position.
2. One of a million equal parts of a whole. Term ppm (parts per million) is also used.

Translations

• Finnish: miljoonas (1), miljoonasosa (2)
• French: millionième m|f (1), millionième (2)
• Interlingua: millionesimo , millionesima (1), millionesimo (2)
• Italian: milionesimo , milionesima (1), milionesimo (2)
• Portuguese: milionésimo , milionésima (1), milionésimo (2)
• Slovene: milijonti , milijonta , milijonto (1), milijonina (2)
• Spanish: millonésimo , millonésima (1), milésimo (2), milesima (3)
• Swedish: miljonte (1), miljontedel (2)

One millionth is equal to 0.000 001, or 1 x 10-6 in scientific notation. It is the reciprocal of a million, can be also written as 1/1 000 000. Units using this fraction can be indicated using the prefix "micro-" from Greek, meaning "small". Numbers of this quantity are expressed in terms of µ (the Greek letter mu).

It is also the ordinal that comes after the nine hundred, ninety-nine thousand, nine hundred, ninety-ninth and before the million and first.

See also

• Micro-
• International System of Units