Abbreviation for 'cost per mille' (thousand), a metric used in advertising to measure cost per thousand impressions.
Acronym from 'cost per mille', where 'mille' is Latin for 'thousand'. This advertising metric was developed to standardize pricing across different media formats and audience sizes.
CPM revolutionized advertising by creating a universal metric that allowed comparison between vastly different media types - from newspapers to radio to digital platforms. The use of Latin 'mille' instead of English 'thousand' reflects advertising's attempt to create sophisticated-sounding technical terminology.
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