Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

milk thistle

noun

Definition of milk thistle

  1. :  a tall thistle (Silybum marianum) having white-veined dark green leaves and large purple flower heads that is native to the Mediterranean region but has become naturalized elsewhere including the United States; also :  an extract of milk thistle and especially its seeds that is held to protect the liver from damage or disease



1562

First Known Use of milk thistle

1562


Medical Dictionary

milk thistle

play
noun milk this·tle \-ˈthis-əl\

Medical Definition of milk thistle

  1. 1:  a tall thistle (Silybum marianum) that is the source of silymarin, has large clasping white-blotched leaves and large purple flower heads with bristly receptacles, and is native to southern Europe but has been widely introduced elsewhere including the United States

  2. 2:  an extract of milk thistle and especially its seeds :  silymarin




Learn More about milk thistle

  1. Medical Dictionary: Definition of milk thistle


Seen and Heard

What made you want to look up milk thistle? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

prophetic or oracular

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

confounded-person

Which is a synonym of indolent?

philistine melancholy frenetic lazy
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ