Acronym |
Definition |
| XL | Roman Numeral 40 |
| XLII | Roman numerals for 42 |
| XLIX | Roman numerals for 49 |
| XLV | Roman Numeral 45 |
| XLVI | Roman Numeral 46 |
| XLVII | 47 in Roman numeral |
| XM | X Midpoint |
| XMLE | Extra-Conditional Maximum Likelihood Estimation |
| XMLE | Extensible mark-up language editor |
| XNR | X converted to a number |
| XNX | Cross- Number matriX |
| XOR | logical eXclusive OR |
| XP | Xtra Problems |
| XPP | X-Phase Plane |
| XT | X Transpose |
| XT | Extension |
| XV | Roman Numeral 15 |
| XVI | Roman Numeral 16 |
| XVII | Roman Numeral 17 |
| XVIII | Roman Numeral 16 |
| XX | Roman Numeral 20 |
| XX3 | Twenty Three |
| XXCXX | Roman Numeral 120 |
| XXI | Roman Numeral 21 |
| XXII | Roman Numeral 22 |
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