Saint-John's-wort
noun
\ ˈsānt-ˈjänz-ˌwərt
, -ˌwȯrt\
, -ˌwȯrt\
variants:
or Saint John's wort
or St. John's wort
Definition of Saint-John's-wort
1
: any of a large genus (Hypericum of the family Guttiferae, the Saint-John's-wort family) of cosmopolitan herbs and shrubs with showy pentamerous yellow flowers
2
: the dried aerial parts of a Saint-John's-wort (Hypericum perforatum) that are held to relieve depression and are used in herbal remedies and dietary supplements
Illustration of Saint-John's-wort
Saint-John's-wort 1
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More Definitions for Saint-John's-wort
Saint-John's-wort
noun
\ -ˈjänz-ˌwərt
, -ˌwȯ(ə)rt
\
, -ˌwȯ(ə)rt
\
Medical Definition of Saint-John's-wort
1
: any of a genus (Hypericum of the family Guttiferae, the Saint-John's-wort family) of herbs and shrubs with showy yellow flowers
especially
: one (H. perforatum) of dry soil, roadsides, pastures, and ranges that contains a photodynamic pigment causing dermatitis due to photosensitization in sheep, cattle, horses, and goats when ingested — see hypericism
2
usually Saint John's wort
: the dried aerial parts of a Saint-John's-wort (Hypericum perforatum) that are held to relieve depression and are used in herbal remedies and dietary supplements