Words that start with X
These are all the words in this dictionary that start with the letter X.
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X-ray
An X-ray machine lets doctors take pictures of the bones inside your body. X-rays are a special kind of light which go through all of your body except your bones and other hard parts of your body, so the bones show up as white on the X-ray.
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Xylophone
A xylophone is a kind of musical instrument. You make music by hitting the different-sized keys with a small hammer to make a tune.
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