- X-axis Noun
- X-factor Noun
- X-ray Noun Verb
- Xanchromatic Adj
- Xanthate Noun
- Xanthating Noun
- Xanthator Noun
- Xanthein Noun
- Xanthelasma Noun
- Xanthelasmatosis Noun
- Xanthene Noun
- Xanthenyl Adj Noun
- Xanthic Adj
- Xanthine Noun
- Xanthinuria Noun
- Xanthippe Noun
- Xanthocarpous Adj
- Xanthochroism Noun
- Xanthochromatic Adj
- Xanthochromia Noun
- Xanthochromic Adj
- Xanthoconite Noun
- Xanthoderma Noun
- Xanthogen Noun
- Xanthogenate Noun
- Xanthogenyl Noun
- Xanthogranulomatous Adj
- Xanthoma Noun
- Xanthomatosis Noun
- Xanthomatous Adj
- Xanthomycin Noun
- Xanthone Noun
- Xanthopathy Noun
- Xanthophyll Noun
- Xanthophyllite Noun
- Xanthoproteic Adj
- Xanthoprotein Noun
- Xanthopsia Noun
- Xanthopterin Noun
- Xanthopurpurin Noun
- Xanthorhamnin Noun
- Xanthosiderite Noun
- Xanthosine Noun
- Xanthosis Noun
- Xanthotoxin Noun
- Xanthous Adj
- Xanthurenic Adj
- Xanthydrol Noun
- Xantogenate Noun Verb
- Xebec Noun
- Xenia Noun
- Xenial Adj
- Xenic Adj
- Xenical Noun
- Xenically Adv
- Xenoantibody Noun
- Xenoantigen Noun
- Xenoantiserum Noun
- Xenobiology Noun
- Xenobiotic Adj