| Term | Full Form | Definition | Meaning | Main Category | Subcategory | Country/ Region | Popularity |
|---|---|---|---|---|---|
| D | Diameter | Academic & Science › Mathematics |  |
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| D | 500 (Roman numeral) | Academic & Science › Mathematics | |
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| d | distance | Academic & Science › Engineering | |
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| D | Diode | Academic & Science › Electronics | |
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| D | Depth | Academic & Science › Engineering | |
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| D | Demand | Business › Business Terms | |
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| D | Day | Business › Business Terms | |
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| D | Denarius | Computing › Cryptocurrency | |
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| D | Deutschland | Transport & Travel › License Plates |  |
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| D | Democrat | Governmental › Politics |  |
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| D | Dominion Energy, Inc. | Stock Exchanges › NYSE | |
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| d | discriminability index | Academic & Science › Electronics | |
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| D-Calif | Democrat from California | Governmental › Politics | |
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| D-Sub | D-Subminiature | Computing › Hardware | |
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| D/o | Daughter of | Academic & Science › Language & Linguistics | |
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| D/O | Delivery Order | Business › Business Terms | |
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| D/O | Disorder | Medical › Diseases & Conditions | |
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| D&B | Dun & Bradstreet | Business › Companies & Corporations | |
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| D&B | Dave & Buster’s | Business › Companies & Corporations | |
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| D&D | Dungeons & Dragons | Sports & Games › Other Games | |
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| D&D | Design & Development | Business › Business Terms | |
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| D&G | Dolce & Gabbana | Society & Culture › Fashion & Lifestyle | |
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| D2C | Direct-to-Consumer | Business › Business Terms | |
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| D2D | Disk-to-Disk | Computing › Security | |
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| D2D | Diploma to Degree | Academic & Science › Academic Degrees | |
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