gal·​in·​so·​ga | \ ˌgalə̇nˈsōgə \

Definition of galinsoga

1 capitalized : a small genus of weedy tropical American herbs (family Compositae) with opposite leaves and small heads of yellowish flowers some of which have become naturalized in Europe and North America — see frenchweed
2 plural galinsoga : any plant of the genus Galinsoga

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

History and Etymology for galinsoga

New Latin, after Mariano M. de Galinsoga †1797 Spanish botanist

Keep scrolling for more

Learn More about galinsoga

Statistics for galinsoga

Cite this Entry

“Galinsoga.” The Dictionary, Merriam-Webster Inc., Accessed 13 December 2019.

Comments on galinsoga

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


easily led, controlled, or managed

Get Word of the Day daily email!

Test Your Vocabulary

Great Scrabble Words—A Quiz

  • scrabble tiles that read scrabble quiz
  • Which of the following Q-without-U words means the number five in cards or dice?
Spell It

Can you spell these 10 commonly misspelled words?

Dictionary Devil

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

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!