| Article | Vol | Words |
|---|---|---|
| XEBEC | 2 | 319 |
| XENOCRATES | 2 | 442 |
| XENOPHANES | 2 | 238 |
| XENOPHON | 2 | 501 |
| XERXES | 2 | 127 |
| XIMENES | 2 | 1,431 |
| XIPHIAS | 2 | 303 |
| XYLO-ALOES | 2 | 649 |
| XYNOECIA | 2 | 46 |
| XYSTARCHA | 2 | 41 |
| XYSTUS | 2 | 230 |
| XANTHIMUM | 20 | 22 |
| XEBEC | 20 | 319 |
| XENOCRATES | 20 | 442 |
| XENOPHANES | 20 | 238 |
| XENOPHON | 20 | 501 |
| XERXES | 20 | 127 |
| XIMENES | 20 | 1,433 |
| XIPHIAS | 20 | 304 |
| XYLO-ALOES | 20 | 650 |
| XYNOECIA | 20 | 47 |
| XYSTARCHA | 20 | 42 |
| XYSTUS | 20 | 233 |