- A substance that is toxic to plants, used to destroy unwanted vegetation: farmers sprayed a protected wildflower meadow with herbicideMore example sentences
- The non-atrazine herbicides were at least as effective as the atrazine herbicides.
- Growers should read and understand the labels on herbicides and other pesticides they use.
- Apply herbicides when plants are in the rosette stage and prior to bolting.
More definitions of herbicideDefinition of herbicide in:
- The US English dictionary