English Words Starting With X

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Noun Verb Adjective Verb (transitive)Verb (ambitransitive)

x-ray therapy
nounLow
/ˈeks reɪ ˈθɛrəpi/The treatment of disease, especially cancer, using controlled doses of high-energy X-rays to destroy malignant cells.
x-ray tube
nounLow
/ˈeks reɪ tjuːb/A vacuum tube used to generate X-rays, converting electrical energy into X-ray radiation.
x-stretcher
nounC1/C2
/ˈɛks ˌstrɛtʃə/A structural cross-brace, typically in an X-shape, connecting the legs of furniture, a medical stretcher, or a decorative architectural element to provide stability.
x-unit
nounC1+
/ˈeks ˌjuːnɪt/A unit of length used to measure X-rays and gamma rays, approximately equal to 1.002×10⁻¹³ meters.
x-wave
nounC1-C2 / Very Low Frequency
/ˈɛks weɪv/A particular pattern or phenomenon in physics, especially describing a specific shape or propagation of electromagnetic radiation.
xanadu
nounC2 / Very Low Frequency
/ˈzæn.ə.duː/An idealized place of great beauty, luxury, and contentment; an idyllic or dreamlike paradise.
xanthan
nounRare
/ˈzænθæn/A natural, soluble, high molecular weight polysaccharide produced by bacterial fermentation and used as a thickening, stabilising, or suspending agent in food and industrial products.
xanthan gum
nounLow
/ˈzænθən ɡʌm/A polysaccharide gum produced by bacterial fermentation, used as a food additive to thicken, stabilize, and emulsify.
xanthate
nounVery low
/ˈzænθeɪt/A salt or ester of xanthic acid, used primarily in industrial processes, notably in the flotation of ores.
xanthe
nounVery Low (Proper noun)
/ˈzænθi/A female given name of Greek origin meaning 'blonde', 'fair-haired', or 'yellow'.
xanthein
nounExtremely Rare / Technical
/ˈzænθiːɪn/A water-soluble yellow plant pigment found in the cell sap of flowers, distinct from the yellow carotenoid pigments.
xanthene
nounVery Low (Specialist Technical)
/ˈzænθiːn/A yellowish crystalline organic compound, specifically a heterocyclic compound with the formula C13H10O, which is the parent structure of various dyes and pigments.
xanthene dye
nounC2
/ˈzænθiːn daɪ/A synthetic dye based on the xanthene chemical structure, characterized by vivid, fluorescent colours.
xanthic acid
nounVery Low / Obscure
/ˈzænθɪk ˈasɪd/A synthetic, unstable acid, C3H6O2S2, existing as colorless oily droplets with a pungent odour, and an intermediate in the production of other chemical compounds.
xanthin
nounExtremely Rare
/ˈzænθɪn/A yellow-coloured pigment found in plants, animals, or natural substances; a type of yellow chemical compound.
xanthine
nounC2
/ˈzanθiːn/A purine base found in most bodily tissues and fluids, and in plants, forming the parent compound for substances like caffeine and theobromine.
xanthippe
nounRare/Literary
/zanˈθɪpi/A scolding, ill-tempered woman; a shrewish wife.
xanthism
nounVery Rare
/ˈzanθɪz(ə)m/A condition of unusual yellow pigmentation in an animal's skin, feathers, or fur.
xanthochroism
nounVery low (C2+; specialised scientific/technical)
/zanˈθɒk.rəʊ.ɪ.zəm/A condition of abnormal yellow pigmentation, typically in animals or occasionally plants, due to the absence or reduction of darker pigments like melanin.
xanthoma
nounLow
zanˈθəʊməA skin condition characterized by yellowish deposits of fat under the skin.

Showing 21–40 of 157 words.