- Xerophyte Noun
- Xeroprinting Noun
- Xeroradiograph Noun
- Xeroradiography Noun
- Xerosere Noun
- Xerosis Noun
- Xerostomia Noun
- Xerotherm Noun
- Xerothermic Adj
- Xerotic Adj
- Xerotomography Noun
- Xerox Noun Verb
- Xeroxed Adj
- Xeroxing Noun
- Xerxes Noun
- Xfer Noun Verb
- Xiphisternal Adj
- Xiphisternum Noun
- Xiphocostal Adj
- Xiphoid Adj Noun
- Xiphoidal Adj
- Xiphoiditis Noun
- Xiphopagus Noun
- Xiphophyllous Adj
- Xiphosuran Noun
- Xis Noun
- Xistor Noun
- Xmas Noun
- Xonotlite Noun
- XPS Noun
- Xraying Noun
- Xtal Noun
- Xylan Noun
- Xylem Noun
- Xylene Noun
- Xylenol Noun
- Xylic Adj
- Xylidine Noun
- Xylite Noun
- Xylitol Noun
- Xylocaine Noun
- Xylocarp Noun
- Xylocarpous Adj
- Xylochloral Noun
- Xylogen Noun
- Xylograph Noun
- Xylographer Noun
- Xylographic Adj
- Xylography Noun
- Xyloid Adj
- Xylol Noun
- Xylolite Noun
- Xylology Noun
- Xylometer Noun
- Xylonite Noun
- Xylophagous Adj
- Xylophone Noun
- Xylophonist Noun
- Xylose Noun
- Xylotomous Adj