Medical Definition of ginger
1a: a thickened pungent aromatic rhizome that is used as a spice and sometimes in medicineb: the spice usually prepared by drying and grinding ginger
2: any of a genus (Zingiber of the family Zingiberaceae, the ginger family) of herbs with pungent aromatic rhizomes; especially : a widely cultivated tropical herb (Z. officinale) that supplies most of the ginger of commerce
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