Willis

Willis definition - medical

Wil·lis (wĭlˈĭs), Thomas 1621-1675.

English anatomist and physician known for his studies of the nervous system and the brain. He discovered the circle of Willis at the base of the brain.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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