What is the definition of herbicide?

A)a chemical that kills pests, especially insects
the act of using something
a chemical that kills vegetation
too much, or too great, to overcome
the process of polluting the earth

C) a chemical that kills vegetation.

What is the definition of insurmountable?

A)too much, or too great, to overcome
the process of polluting the earth
a chemical that kills vegetation
a chemical that kills pests, especially insects
the act of using something

A) too much, or too great, to overcome.

The definition of herbicide is "a chemical that kills vegetation." To find the definition, you can search online using a search engine such as Google or refer to a dictionary. Simply typing "definition of herbicide" into the search bar will provide you with the information you are looking for. Alternatively, you can consult a physical dictionary or use online dictionary platforms to look up the word and find its meaning.