| Term | Full Form | Definition | Meaning | Main Category | Subcategory | Country/ Region | Popularity |
|---|---|---|---|---|---|
| m | metre | Academic & Science › Units |  |
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| M | Manual | Technology › Automotive | |
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| M | Male | Business › Business Terms | |
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| M | Millennium | Academic & Science › Language & Linguistics | |
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| m | Minute | Academic & Science › Units | |
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| M | Manual | Technology › Tech Terms | |
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| M | Motorsport | Technology › Automotive | |
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| M | Medium | Society & Culture › Fashion & Lifestyle | |
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| m | Mass (as in E=mc^2) | Academic & Science › Physics | |
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| M | Macy’s, Inc. | Business › NYSE Symbols |  |
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| M | Mature | Computing › Games & Entertainment | |
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| M | 1000 (Roman numeral) | Academic & Science › Mathematics | |
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| m | Milli | Academic & Science › Units | |
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| M | Mega | Academic & Science › Units | |
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| m | mobile | Computing › Websites | |
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| M | Motor | Academic & Science › Electrical | |
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| M | Manchester | Regional › Postal |  |
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| M | Mature (Age 17+) | Computing › Games & Entertainment | |
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| M | Chief of the British Secret Service | Miscellaneous › Fictional | |
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| M | Munich | Transport & Travel › License Plates |  |
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| M | Mach number | Academic & Science › Engineering | |
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| M | Methionine | Academic & Science › Chemistry | |
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| M | Mean anomaly | Academic & Science › Astronomy & Space Science | |
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| M | Up to 81 mph | Technology › Automotive | |
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| M-DISC | Millennial Disc | Computing › Data Storage | |
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