| Term | Full Form | Definition | Meaning | Main Category | Subcategory | Country/ Region | Popularity |
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| F | Force | Academic & Science › Physics |  |
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| f | frequency | Academic & Science › Physics | |
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| F | Fluorine | Academic & Science › Chemistry | |
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| F | Fahrenheit | Academic & Science › Language & Linguistics | |
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| f | focal length | Academic & Science › Physics | |
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| f | femto | Academic & Science › Units | |
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| F | Fail/Failure | Academic & Science › Courses | |
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| F | Faraday constant | Academic & Science › Physics | |
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| F | Helmholtz free energy | Academic & Science › Engineering | |
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| F | Full | Technology › Automotive | |
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| F | Female | Governmental › Documents & Certificates | |
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| F&B | Food and Beverage | Society & Culture › Food & Drink | |
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| F1 | Formula 1 | Sports & Games › Racing Sports | |
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| F1 | Function 1 | Computing › Hardware | |
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| F1 | Filial 1 | Medical › Genetics | |
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| F1 | Foundation year 1 | Medical › Hospitals |  |
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| F1 | Formant 1 | Academic & Science › Physics | |
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| F2F | Face To Face | Miscellaneous › Chat & Messaging | |
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| F2F | Friend-to-Friend | Computing › Internet | |
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| F2F | Foreningen 2 Foreldre | Associations & Organizations › Regional Organizations |  |
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| F2F | Field-to-Finish | Technology › Tech Terms | |
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| F2F | Forecast-to-Fulfill | Business › Business Terms | |
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| F2FS | Flash-Friendly File System | Computing › General Computing | |
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| F6S | FOUNDERS | Business › Companies & Corporations | |
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| FAA | Federal Aviation Administration | Governmental › Departments & Agencies |  |
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