noun.
Any pesticide that attacks the larval stage of an insect
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
a chemical used to kill larval pests
Word Usage
"Additionally, unsafe sources of drinking water can be treated with an approved larvicide, such as ABATE®*, that kills copepods, and communities can be provided with new safe sources of drinking water, or have existing dysfunctional ones repaired."