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py·ram·i·dal pə-'ram-əd-əl adj
1) of, relating to, or having the form of a pyramid
2) of, relating to, or affecting an anatomical pyramid esp. of the central nervous system <a crossed \pyramidal lesion> <a \pyramidal disorder>
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py·ram·i·dal (pĭ-ramґĭ-dəl) [L. pyramidalis] 1. shaped like a pyramid. 2. pertaining to the pyramidal tract.Medical dictionary. 2011.