Deci-

Deci (symbol d) is a decimal unit prefix in the metric system denoting a factor of one tenth. Proposed in 1793,{{cite book|title=Instruction abrégée sur les mesures déduites de la grandeur de la Terre; uniformes pour toute la Rêpublique, et sur les Calculs relatifs à leur division décimale |access-date=2015-10-09}} and adopted in 1795, the prefix comes from the Latin decimus, meaning "tenth". Since 1960, the prefix is part of the International System of Units (SI).{{cite book | access-date=2020-05-14 | archive-date=2020-04-08 | archive-url=https://web.archive.org/web/20200408155740/https://www.bipm.org/en/CGPM/db/11/12/ | url-status=dead

A frequent use of the prefix is in the unit deciliter (dl), common in food recipes; many European homes have a deciliter measure for flour, water, etc. A common measure in engineering is the unit decibel for measuring ratios of power and root-power quantities, such as sound level and electrical amplification.

Example

• The diameter of a compact disc is about 12 centimetres or 1.2 decimetres.{{cite web | url-status=live | archive-url=https://web.archive.org/web/20170208212202/http://www.nikon.com/about/sp/universcale/index.htm | archive-date=2017-02-08 | access-date=2017-02-08}}

References