What does parasiticidal mean?
Parasiticidal means capable of killing parasites, organisms that live on or inside another organism while benefiting at the host's expense. The term is especially common in medicine, veterinary science, microbiology, and research involving antiparasitic treatments. It may describe a drug, chemical compound, biological agent, or other substance whose action destroys a parasite. For example, a laboratory might report that a compound has a strong parasiticidal effect, while a clinician might discuss the use of a parasiticidal treatment in treating an infection. The word is more precise than antiparasitic because it specifically suggests killing the parasite, not merely inhibiting its growth, reproduction, or activity. It is related to parasiticide, a noun meaning a substance that kills parasites.
adjectiveDestructive to parasites; used especially of substances or treatments that kill parasitic organisms.
- Destructive to parasites, especially capable of killing them.
"The compound demonstrated a potent parasiticidal effect against the parasite in laboratory tests."
"Several essential oils have been investigated for their parasiticidal properties."
"The physician recommended a parasiticidal treatment for the patient's infection."
Parasiticidal describes a targeted form of killing: not the host organism, but the unwelcome parasite living within or upon it.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does parasiticidal come from?
The word combines parasite with the combining form -cidal, meaning “killing” or “destroying.” Its sense follows the broader history of parasite and parasitic, words derived through Latin and Greek from a root associated with feeding at another organism's expense. The related noun parasiticide names a substance used to destroy parasites.
Related word forms
How parasiticidal is actually used
This is a specialized adjective used in medicine, parasitology, veterinary science, and biological research. It is more specific than the broader term antiparasitic, since it emphasizes killing rather than merely inhibiting, repelling, or otherwise affecting parasites.