Medical Definition of asparagus
1 capitalized : a genus of Old World perennial herbs of the lily family (Liliaceae) having erect much-branched stems, minute scalelike leaves, and narrow filiform branchlets that function as leaves
2a: any plant of the genus Asparagus; especially : a plant (A. officinalis) widely cultivated for its tender edible young shootsb: the root of cultivated asparagus formerly used as a diuretic
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