1 of 2


: acting or tending to act as a pesticidal eradicant
an eradicant spray


2 of 2


plural -s
: an agent of eradication
especially : a pesticidal spray used to destroy a parasitic organism at its source before it reaches the suscept
an eradicant applied to scab-infested apple leaves on the ground
compare protectant

Word History



eradicate + -ant

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!

Dictionary Entries Near eradicant

Cite this Entry

“Eradicant.” Dictionary, Merriam-Webster, Accessed 15 Apr. 2024.

Love words? Need even more definitions?

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