- x
- x bevelled
- x-axis
- x-band
- x-height
- x-rated
- x-ray
- x-rays
- x-refrigerant
- x-unit
- xDSL
- xanthaemia
- xanthate
- xanthelasma
- xanthelasmoidea
- xanthic
- xanthine
- xanthinurian
- xanthippe
- xanthochromatic
- xanthochromia
- xanthochroous
- xanthocyanopsia
- xanthocyte
- xanthodontous
- xanthofibromathecocellulare
- xanthogenic
- xanthoma
- xanthoma disseminatum
- xanthoma eruptive
- xanthoma glycosuricum
- xanthoma planum
- xanthophose
- xanthophy
- xanthophyll
- xanthopsia
- xanthopsis
- xanthopsydracia
- xanthosis
- xanthosis cutis
- xanthous
- xathine
- xbase
- xcmd
- xcnf
- xebec
- xenelasia
- xenem bole
- xenix
- xenoblast
- xenocryst
- xenodiagnosis
- xenogamy
- xenogenic transplantation
- xenogennous
- xenograft
- xenomemia
- xenomorph
- xenomorphic
- xenomorphic structure
- xenomorphic texture
- xenon
- xenon effect
- xenon peak
- xenon reactivity
- xenonthermal
- xenoparasite
- xenophilia
- xenophilous
- xenophobe
- xenophobia
- xenophobic
- xenophthalmia
- xenopsylia
- xerannis
- xeraphium
- xerocopy
- xeroderma
- xerodermatic
- xerodermosteosis
- xerogaphy
- xerogel
- xerograph
- xerographic installation
- xerographic printer
- xerography
- xeromenia
- xerophagia
- xerophagy
- xerophilous
- xerophthalmia
- xerophthamia
- xerophyte
- xeroprinting
- xeroradiography
- xerosfomia
- xerosis
- xerotic keratitis
- xerox
- xerox copy