Science Diction: The Origin Of The Word 'Cancer'

Around 400 B.C., Hippocrates is said to have named masses of cancerous cells karkinos -- Greek for crab. Science and medical historian Howard Markel discusses a few hypotheses on why Hippocrates named the disease after a crab, and how well cancer was understood in the ancient world.

Source: http://www.npr.org/templates/story/story.php?storyId=130754101&ft=1&f=1007

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