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X-radiation
X-rated
X-ray
X-ray astronomy
X-ray crystallography
X-ray diffraction
X-ray fluorescence
X-ray spectrum
X-ray star
X-ray therapy
X-ray tube
X12
Xanadu
xanth-
xanthan gum
xanthate
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x (1)

x [ eks ] or X


noun  (plural x's) (plural X's or Xs)
Definition:
 
1. 24th letter of English alphabet: the 24th letter of the English alphabet, representing a consonant sound

2. letter 'x' written: a written representation of the letter 'x'

3. 'x' indicating something: an x-shaped mark used for indicating a vote, showing that something is incorrect, representing a kiss, or representing a signature by somebody who cannot write

4. Roman numeral: the Roman numeral for 10



transitive verb  (3rd person present singular x-es or x'es, present participle x-ing or x'ing, past and past participle x-ed or x'ed) (3rd person present singular X-es or X'es, present participle X-ing or X'ing, past and past participle X-ed or X'ed)
Definition:
 
mark something with 'x': to mark or sign something with an 'x'

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