Micropedia X
From SM-201
- X chromosome
- Wikipedia:X chromosome
- X-linked recessive
- Wikipedia:X-linked recessive
- xanith
- Wikipedia:xanith
- Xenophilia
- A sexual attraction to foreigners (in science fiction, can also mean sexual attraction to aliens)
- Xenophobia
- A fear of strangers or foreigners - see also Phobophilia
- Xenosexual
- being sexually attracted to aliens or extraterrestrial life (see: Xenophilia)
- xenophily
- XO syndrome
- Wikipedia:XO syndrome
- XXX syndrome
- Wikipedia:XXX syndrome
- XXY syndrome
- Wikipedia:XXY syndrome
- XYY syndrome
- Wikipedia:XYY syndrome
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