Medical Dictionary
1spiral
adj spi·ral \ˈspī-rəl\
Medical Definition of SPIRAL
1
a : winding around a center or pole and gradually receding from or approaching it b : helical <the spiral structure of DNA>
2
: 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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