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Medical Dictionary


adj spi·ral \ˈspī-rəl\

Medical Definition of SPIRAL

a :  winding around a center or pole and gradually receding from or approaching it b :  helical <the spiral structure of DNA>
:  being a fracture in which the break is produced by twisting apart the bone <a double spiral break>
spi·ral·ly \-rə-lē\ adverb
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