To save this word, you'll need to log in.
hy·per·i·cism | \ -ˌsiz-əm 
\
\Medical Definition of hypericism
: a severe dermatitis of domestic herbivorous animals due to photosensitivity resulting from eating Saint-John's-wort — compare fagopyrism
Comments on hypericism
What made you want to look up hypericism? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
May 2020 Words of the Day Quiz
- Which is a synonym of exiguous?
Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Share hypericism