ameliorant

noun ame·lio·rant \əˈmēlyərənt, -lēə-\

Definition of ameliorant

plural

-s

  1. :  a substance that aids plant growth primarily by improving the physical condition of the soil

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.

Join MWU now and get access to America’s largest dictionary, with:

  • 300,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Origin and Etymology of ameliorant

ameliorate + -ant


First Known Use: 1851


Seen and Heard

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

WORD OF THE DAY

a brief usually trivial fact

Get Word of the Day daily email!