Medical Definition of inula
1: the dried roots and rhizome of elecampane used as an aromatic stimulant and especially formerly as a remedy in pulmonary diseases—called also elecampane, elecampane root
2 capitalized : a genus of Old World perennial herbaceous or rarely shrubby plants (family Compositae) having large yellow radiate heads and including the elecampane (I. helenium)
3: any plant or root of the genus Inula
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