noun ·Uncommon ·Advanced level

Definitions

Noun

1. 1
   A natural substance that is used to make the ground more suitable for growing plants. countable, uncountable

   "The farmer spread fertiliser across the fields."

2. 2
   any substance such as manure or a mixture of nitrates used to make soil more fertile wordnet
3. 3
   A chemical compound created to have the same effect. countable, uncountable

Synonyms

All synonyms

ammoniacompostdressingdungfertilisermanure

Example

More examples

"What's the best fertilizer for tomatoes?"

Etymology

From fertilize + -er.

Related phrases

over-fertilizationlawn food

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.