Simple Online Photographic Dictionary

a visual dictionary that can be used as a children's picture dictionary,
an English language learning tool or a cross-cultural reference.
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X-ray

Photo of an 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 and the muscle in between shows black.

Photo by Keone