erigeron
noun
erig·er·on ə-ˈri-jə-ˌrän 
: any of a widely distributed genus (Erigeron) of composite herbs with flower heads that resemble asters but have fewer and narrower involucral bracts
Word History
Etymology
New Latin, from Latin, groundsel, from Greek ērigerōn, from ēri early + gerōn old man; from the hoary down of some species — more at ere, geronto-
First Known Use
1601, in the meaning defined above
Medical Definition
erigeron
noun
erig·er·on ə-ˈrij-ə-rən -ˌrän
-ˌrän 1
capitalized : a widely distributed genus of composite herbs having flower heads resembling asters
2
a
: any plant of the genus Erigeron
b
: the leaves and tops of plants of the genus Erigeron occasionally and especially formerly used as a diuretic and as a hemostatic in uterine hemorrhage
c
: erigeron oil