Unit of Measure

Pronunciation: /ˈyunɪt ʌv ˈmɛʒər/ ?

A unit of measure is the definition of the number '1' in a metric space. For example, when we use meters, the unit of measure is 1 meter. In the context of meters, a unit is 1 meter. However, if one is using feet for a measurement of distance, '1' means 1 foot.

A mathematical object is unity if it defines 1 in a unit of measure1.


  1. Descartes, René. La Geometrie. pg 297-298. Discourse. 1673


  1. Bettinger, Alvin K. and Englund, John A.. Algebra and Trigonometry, pg 4. International Textbook Company, January 1963. (Accessed: 2010-01-12). http://www.archive.org/stream/algebraandtrigon033520mbp#page/n18/mode/1up.
  2. unit. merriam-webster.com. Encyclopedia Britannica. (Accessed: 2009-03-12). http://www.merriam-webster.com/dictionary/unit.

More Information

  • McAdams, David. Measurement. allmathwords.org. All Math Words Encyclopedia. Life is a Story Problem LLC. 2009-03-12. http://www.allmathwords.org/article.aspx?lang=en&id=Measurement.

Printed Resources

Cite this article as:

Unit of Measure. 2009-11-11. All Math Words Encyclopedia. Life is a Story Problem LLC. http://www.allmathwords.org/en/u/unit.html.


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Revision History

2009-11-11: Added sentence on unitary. (McAdams, David.)
2008-09-18: Changed 'unit' to 'unit of measure', added 'Measurement' to More Information (McAdams, David.)
2008-03-11: Added See Also section (McAdams, David.)
2007-07-12: Initial version (McAdams, David.)

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