Definition of yellowtop

1a : any of several goldenrods especially : early goldenrod sometimes plural but singular in construction
2 : any of several plant diseases characterized by yellowing of the upper foliage: such as
a : a disease of alfalfa of undetermined cause characterized by a pronounced yellowing of the upper portions of affected plants
b : a yellowing of alfalfa tops caused by the punctures of the potato leafhopper

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 yellowtop

yellow entry 1 + top

Keep scrolling for more

Comments on yellowtop

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


a period when something is suspended

Get Word of the Day daily email!

Test Your Vocabulary

Summer 2019 Words of the Day Quiz

  • a-bowl-of-peach-sorbet-with-cut-peaches-next-to-it
  • Which is a synonym of desideratum?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

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!