A Variable.
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The use of the word X in the word x-ray was intended to emphasize the unusual nature of the rays. X is a letter that is seldom used.
An eight letter word with x as a second letter is exciting.
We use the article "an" before the letter X because of the pronunciation of the name of the letter. The name of the letter is pronounced as if it were spelled "ex." And. since we use "an" before words that start with a vowel sound, we say "an X."
There is no double letter word with the letter x
A three letter word that ends in the letter x could be the word Hex. A hex is a witches curse or spell.
The double consonant word that begins with the letter x is "excess."
No word starting with the letter y contains the letter x.
7 letter word 3rd letter x
7 letter word 3rd letter x
A four letter word beginning with C and ending with X is crux.
x-treme