| Xylophone | | level | 4 |
|---|
| topic | "Arts" |
|---|
| section | "Musical instruments" |
|---|
|
|---|
| Xiphosura | | level | 4 |
|---|
| topic | "Biology and health sciences" |
|---|
| section | "Chelicerata" |
|---|
|
|---|
| Xiangqi | | level | 4 |
|---|
| topic | "Everyday life" |
|---|
| section | "Games" |
|---|
|
|---|
| Xinjiang | | level | 4 |
|---|
| topic | "Geography" |
|---|
| section | "China" |
|---|
|
|---|
| Xiamen | | level | 4 |
|---|
| topic | "Geography" |
|---|
| section | "East China" |
|---|
|
|---|
| Xi'an | | level | 4 |
|---|
| topic | "Geography" |
|---|
| section | "South Central China" |
|---|
|
|---|
| Xia dynasty | | level | 4 |
|---|
| topic | "History" |
|---|
| section | "East Asia" |
|---|
|
|---|
| Xiongnu | | level | 4 |
|---|
| topic | "History" |
|---|
| section | "East Asia" |
|---|
|
|---|
| Xuanzang | | level | 4 |
|---|
| topic | "People" |
|---|
| section | "Post-classical_3" |
|---|
|
|---|
| Xunzi (philosopher) | | level | 4 |
|---|
| topic | "People" |
|---|
| section | "Ancient_3" |
|---|
|
|---|
| Xenophon | | level | 4 |
|---|
| topic | "People" |
|---|
| section | "Ancient_4" |
|---|
|
|---|
| Xerxes I | | level | 4 |
|---|
| topic | "People" |
|---|
| section | "Western Asia" |
|---|
|
|---|
| Xi Jinping | | level | 4 |
|---|
| topic | "People" |
|---|
| section | "China_3" |
|---|
|
|---|
| Xenon | | level | 4 |
|---|
| topic | "Physical sciences" |
|---|
| section | "Chemical elements_2" |
|---|
|
|---|
| X-ray | | level | 4 |
|---|
| topic | "Physical sciences" |
|---|
| section | "Electrodynamics" |
|---|
|
|---|
| Xkcd | | level | 5 |
|---|
| topic | "Arts" |
|---|
| section | "Comic strips, editorial cartoons and webcomics" |
|---|
|
|---|
| X-Men | | level | 5 |
|---|
| topic | "Arts" |
|---|
| section | "Heroes" |
|---|
|
|---|
| Xerini | | level | 5 |
|---|
| topic | "Biology and health sciences" |
|---|
| sublist | "Animals" |
|---|
| section | "Rodents" |
|---|
|
|---|
| Xenopeltis | | level | 5 |
|---|
| topic | "Biology and health sciences" |
|---|
| sublist | "Animals" |
|---|
| section | "Snakes" |
|---|
|
|---|
| Xenopus | | level | 5 |
|---|
| topic | "Biology and health sciences" |
|---|
| sublist | "Animals" |
|---|
| section | "Frogs and toads" |
|---|
|
|---|
| Xiphactinus | | level | 5 |
|---|
| topic | "Biology and health sciences" |
|---|
| sublist | "Animals" |
|---|
| section | "Prehistoric osteichthyans" |
|---|
|
|---|
| Xanthidae | | level | 5 |
|---|
| topic | "Biology and health sciences" |
|---|
| sublist | "Animals" |
|---|
| section | "Crabs and hermit crabs" |
|---|
|
|---|
| Xenacoelomorpha | | level | 5 |
|---|
| topic | "Biology and health sciences" |
|---|
| sublist | "Animals" |
|---|
| section | "Other" |
|---|
|
|---|
| Xylem | | level | 5 |
|---|
| topic | "Biology and health sciences" |
|---|
| sublist | "Biology" |
|---|
| section | "Plant tissues" |
|---|
|
|---|
| Xanthorrhoea | | level | 5 |
|---|
| topic | "Biology and health sciences" |
|---|
| sublist | "Plants" |
|---|
| section | "Asparagales" |
|---|
|
|---|
| Xbox (console) | | level | 5 |
|---|
| topic | "Everyday life" |
|---|
| sublist | "Sports, games and recreation" |
|---|
| section | "Video game hardware" |
|---|
|
|---|
| Xbox 360 | | level | 5 |
|---|
| topic | "Everyday life" |
|---|
| sublist | "Sports, games and recreation" |
|---|
| section | "Video game hardware" |
|---|
|
|---|
| Xbox One | | level | 5 |
|---|
| topic | "Everyday life" |
|---|
| sublist | "Sports, games and recreation" |
|---|
| section | "Video game hardware" |
|---|
|
|---|
| X Games | | level | 5 |
|---|
| topic | "Everyday life" |
|---|
| sublist | "Sports, games and recreation" |
|---|
| section | "International competitions" |
|---|
|
|---|
| Xalapa | | level | 5 |
|---|
| topic | "Geography" |
|---|
| sublist | "Cities" |
|---|
| section | "Mexico" |
|---|
|
|---|
| Xingtai | | level | 5 |
|---|
| topic | "Geography" |
|---|
| sublist | "Cities" |
|---|
| section | "North China" |
|---|
|
|---|
| Xicheng, Beijing | | level | 5 |
|---|
| topic | "Geography" |
|---|
| sublist | "Cities" |
|---|
| section | "North China" |
|---|
|
|---|
| Xuzhou | | level | 5 |
|---|
| topic | "Geography" |
|---|
| sublist | "Cities" |
|---|
| section | "East China" |
|---|
|
|---|
| Xinxiang | | level | 5 |
|---|
| topic | "Geography" |
|---|
| sublist | "Cities" |
|---|
| section | "South Central China" |
|---|
|
|---|
| Xiangtan | | level | 5 |
|---|
| topic | "Geography" |
|---|
| sublist | "Cities" |
|---|
| section | "South Central China" |
|---|
|
|---|
| Xianyang | | level | 5 |
|---|
| topic | "Geography" |
|---|
| sublist | "Cities" |
|---|
| section | "Northwest China" |
|---|
|
|---|
| Xining | | level | 5 |
|---|
| topic | "Geography" |
|---|
| sublist | "Cities" |
|---|
| section | "Northwest China" |
|---|
|
|---|
| Xiang River | | level | 5 |
|---|
| topic | "Geography" |
|---|
| sublist | "Physical" |
|---|
| section | "East Asia" |
|---|
|
|---|
| Xiamen Island | | level | 5 |
|---|
| topic | "Geography" |
|---|
| sublist | "Physical" |
|---|
| section | "China" |
|---|
|
|---|
| Xiling Gorge | | level | 5 |
|---|
| topic | "Geography" |
|---|
| sublist | "Physical" |
|---|
| section | "Eastern Asia" |
|---|
|
|---|
| XYZ Affair | | level | 5 |
|---|
| topic | "History" |
|---|
| section | "Americas_4" |
|---|
|
|---|
| Xhosa Wars | | level | 5 |
|---|
| topic | "History" |
|---|
| section | "Africa_7" |
|---|
|
|---|
| Xinjiang conflict | | level | 5 |
|---|
| topic | "History" |
|---|
| section | "China" |
|---|
|
|---|
| Xinjiang internment camps | | level | 5 |
|---|
| topic | "History" |
|---|
| section | "China" |
|---|
|
|---|
| Xue Ji | | level | 5 |
|---|
| topic | "People" |
|---|
| sublist | "Artists, musicians, and composers" |
|---|
| section | "Chinese" |
|---|
|
|---|
| X Japan | | level | 5 |
|---|
| topic | "People" |
|---|
| sublist | "Artists, musicians, and composers" |
|---|
| section | "Japanese_2" |
|---|
|
|---|
| XXXTentacion | | level | 5 |
|---|
| topic | "People" |
|---|
| sublist | "Artists, musicians, and composers" |
|---|
| section | "Hip-hop and rap" |
|---|
|
|---|
| Xu Jinglei | | level | 5 |
|---|
| topic | "People" |
|---|
| sublist | "Entertainers, directors, producers, and screenwriters" |
|---|
| section | "Asia_2" |
|---|
|
|---|
| Xie Jin | | level | 5 |
|---|
| topic | "People" |
|---|
| sublist | "Entertainers, directors, producers, and screenwriters" |
|---|
| section | "Asia_3" |
|---|
|
|---|
| Xue Jinghua | | level | 5 |
|---|
| topic | "People" |
|---|
| sublist | "Entertainers, directors, producers, and screenwriters" |
|---|
| section | "Ballet" |
|---|
|
|---|
| Xuxa | | level | 5 |
|---|
| topic | "People" |
|---|
| sublist | "Entertainers, directors, producers, and screenwriters" |
|---|
| section | "Latin America" |
|---|
|
|---|
| Xu Xiangqian | | level | 5 |
|---|
| topic | "People" |
|---|
| sublist | "Military personnel, revolutionaries, and activists" |
|---|
| section | "Asia_2" |
|---|
|
|---|
| Xaver Hohenleiter | | level | 5 |
|---|
| topic | "People" |
|---|
| sublist | "Military personnel, revolutionaries, and activists" |
|---|
| section | "Germany_2" |
|---|
|
|---|
| Xu Fu | | level | 5 |
|---|
| topic | "People" |
|---|
| sublist | "Miscellaneous" |
|---|
| section | "Ancient" |
|---|
|
|---|
| Xaviera Hollander | | level | 5 |
|---|
| topic | "People" |
|---|
| sublist | "Miscellaneous" |
|---|
| section | "Sex work" |
|---|
|
|---|
| Xenophanes | | level | 5 |
|---|
| topic | "People" |
|---|
| sublist | "Philosophers, historians, political and social scientists" |
|---|
| section | "Ancient (before AD 500)" |
|---|
|
|---|
| Xiong Shili | | level | 5 |
|---|
| topic | "People" |
|---|
| sublist | "Philosophers, historians, political and social scientists" |
|---|
| section | "Asia" |
|---|
|
|---|
| Xu Shen | | level | 5 |
|---|
| topic | "People" |
|---|
| sublist | "Philosophers, historians, political and social scientists" |
|---|
| section | "Linguists" |
|---|
|
|---|
| Xiang Yu | | level | 5 |
|---|
| topic | "People" |
|---|
| sublist | "Politicians and leaders" |
|---|
| section | "China" |
|---|
|
|---|
| Xuande Emperor | | level | 5 |
|---|
| topic | "People" |
|---|
| sublist | "Politicians and leaders" |
|---|
| section | "China_2" |
|---|
|
|---|
| Xianfeng Emperor | | level | 5 |
|---|
| topic | "People" |
|---|
| sublist | "Politicians and leaders" |
|---|
| section | "Emperors" |
|---|
|
|---|
| Xu Shichang | | level | 5 |
|---|
| topic | "People" |
|---|
| sublist | "Politicians and leaders" |
|---|
| section | "Warlord Era" |
|---|
|
|---|
| Xiang Zhongfa | | level | 5 |
|---|
| topic | "People" |
|---|
| sublist | "Politicians and leaders" |
|---|
| section | "Communists" |
|---|
|
|---|
| Xu Zhonglin | | level | 5 |
|---|
| topic | "People" |
|---|
| sublist | "Writers and journalists" |
|---|
| section | "Asia_3" |
|---|
|
|---|
| Xiao Hong | | level | 5 |
|---|
| topic | "People" |
|---|
| sublist | "Writers and journalists" |
|---|
| section | "Asia_4" |
|---|
|
|---|
| Xie Lingyun | | level | 5 |
|---|
| topic | "People" |
|---|
| sublist | "Writers and journalists" |
|---|
| section | "Asia_5" |
|---|
|
|---|
| X-ray astronomy | | level | 5 |
|---|
| topic | "Physical sciences" |
|---|
| sublist | "Astronomy" |
|---|
| section | "High-energy astronomy" |
|---|
|
|---|
| X-ray binary | | level | 5 |
|---|
| topic | "Physical sciences" |
|---|
| sublist | "Astronomy" |
|---|
| section | "Stellar astronomy" |
|---|
|
|---|
| X-ray pulsar | | level | 5 |
|---|
| topic | "Physical sciences" |
|---|
| sublist | "Astronomy" |
|---|
| section | "Stellar astronomy" |
|---|
|
|---|
| X unit | | level | 5 |
|---|
| topic | "Physical sciences" |
|---|
| sublist | "Basics and measurement" |
|---|
| section | "Other" |
|---|
|
|---|
| Xylitol | | level | 5 |
|---|
| topic | "Physical sciences" |
|---|
| sublist | "Chemistry" |
|---|
| section | "Sugar alcohols" |
|---|
|
|---|
| Xanthine | | level | 5 |
|---|
| topic | "Physical sciences" |
|---|
| sublist | "Chemistry" |
|---|
| section | "Alkaloids" |
|---|
|
|---|
| Xenon tetrafluoride | | level | 5 |
|---|
| topic | "Physical sciences" |
|---|
| sublist | "Chemistry" |
|---|
| section | "Noble gas compounds" |
|---|
|
|---|
| Xenon hexafluoroplatinate | | level | 5 |
|---|
| topic | "Physical sciences" |
|---|
| sublist | "Chemistry" |
|---|
| section | "Noble gas compounds" |
|---|
|
|---|
| X-ray spectroscopy | | level | 5 |
|---|
| topic | "Physical sciences" |
|---|
| sublist | "Chemistry" |
|---|
| section | "Spectroscopy" |
|---|
|
|---|
| X-ray crystallography | | level | 5 |
|---|
| topic | "Physical sciences" |
|---|
| sublist | "Physics" |
|---|
| section | "Crystallography" |
|---|
|
|---|
| Xi'an Jiaotong University | | level | 5 |
|---|
| topic | "Society and social sciences" |
|---|
| sublist | "Culture" |
|---|
| section | "C9" |
|---|
|
|---|
| Xhosa language | | level | 5 |
|---|
| topic | "Society and social sciences" |
|---|
| sublist | "Culture" |
|---|
| section | "Niger–Congo languages" |
|---|
|
|---|
| Xiang Chinese | | level | 5 |
|---|
| topic | "Society and social sciences" |
|---|
| sublist | "Culture" |
|---|
| section | "Sino-Tibetan languages" |
|---|
|
|---|
| Xinhua News Agency | | level | 5 |
|---|
| topic | "Society and social sciences" |
|---|
| sublist | "Culture" |
|---|
| section | "News agencies" |
|---|
|
|---|
| Xena: Warrior Princess | | level | 5 |
|---|
| topic | "Society and social sciences" |
|---|
| sublist | "Culture" |
|---|
| section | "1980–1999" |
|---|
|
|---|
| Xenophobia | | level | 5 |
|---|
| topic | "Society and social sciences" |
|---|
| sublist | "Social studies" |
|---|
| section | "Discrimination" |
|---|
|
|---|
| X86 | | level | 5 |
|---|
| topic | "Technology" |
|---|
| section | "Computer architecture concepts" |
|---|
|
|---|
| X86-64 | | level | 5 |
|---|
| topic | "Technology" |
|---|
| section | "Computer architecture concepts" |
|---|
|
|---|
| X Window System | | level | 5 |
|---|
| topic | "Technology" |
|---|
| section | "User interface" |
|---|
|
|---|
| XML | | level | 5 |
|---|
| topic | "Technology" |
|---|
| section | "Markup languages" |
|---|
|
|---|
| XOR gate | | level | 5 |
|---|
| topic | "Technology" |
|---|
| section | "Digital logic" |
|---|
|
|---|
| XNOR gate | | level | 5 |
|---|
| topic | "Technology" |
|---|
| section | "Digital logic" |
|---|
|
|---|
| X-ray telescope | | level | 5 |
|---|
| topic | "Technology" |
|---|
| section | "Telescope" |
|---|
|
|---|
| XMM-Newton | | level | 5 |
|---|
| topic | "Technology" |
|---|
| section | "Space-based observatories" |
|---|
|
|---|
