Milli-
SI prefix denoting 10 to the -3rd power
title: "Milli-" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["si-prefixes", "1000-(number)"] description: "SI prefix denoting 10 to the -3rd power" topic_path: "general/si-prefixes" source: "https://en.wikipedia.org/wiki/Milli-" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary SI prefix denoting 10 to the -3rd power ::
Milli (symbol m) is a unit prefix in the metric system denoting a factor of one thousandth (10−3).{{cite journal | url=https://www.nist.gov/pml/special-publication-811/nist-guide-si-chapter-4-two-classes-si-units-and-si-prefixes | title=Special Publication 811: NIST Guide to the SI, Chapter 4: The Two Classes of SI Units and the SI Prefixes |author1=A. Thompson |author2=B. N. Taylor | journal=NIST | date=2009-07-02 | publisher=Physical Measurement Laboratory | access-date=2020-05-14}} 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 | author=Commission temporaire de Poids & Mesures rêpublicaines, En exécution des Décrets de la Convention Nationale | publisher=De l´imprimerie nationale exécutive du Louvre | edition=Edition originale | location=Paris, France | language=fr | date=1793 | url=https://archive.org/details/instructionabreg00hauy | access-date=2015-10-09}} and adopted in 1795, the prefix comes from the Latin mille, meaning one thousand (the Latin plural is milia). Since 1960, the prefix is part of the International System of Units (SI).
References
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