Dictionary » R » Repellent



noun, plural: repellents

(1) An agent or a method that wards off, as insect-repellent to repel insects

(2) A remedy that eases swellings

(3) A waterproofing treatment, as in fabrics


(1) Causing to repel or resist

(2) Tending to ward off

(3) Being resistant (to something)


Animal repellents are available as natural or synthetic agents to repel animals. An insect repellent works by ways that drives away insects (e.g. through a scent). Examples of insect repellents include permethrin, neem oil, DEET, and certain essential oils. Other insect repellents may be in the form of a high frequency sound that is not audible to human ears. For natural repellents, an example is animal urine. Fox urine is claimed to repel rabbits, squirrels, etc.

Word origin: From Latin repellens


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Results from our forum

Re: Green Mosquito===Photos Available

... my body. I killed one about an hour ago and it popped with blood and I realized that it was mine. Whatever this insect maybe, I need to find a repellent or trap for it. They're hard to kill when you see them, cause they're so fast and stealth. I turned on my ac in order to make the temperature ...

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by lexy
Mon Aug 18, 2008 10:29 am
Forum: Zoology Discussion
Topic: Green Mosquito===Photos Available
Replies: 74
Views: 137971

Re: Human Collembola Infestations

... of ammonia is does not hurt me. It might not hurt anyone else either, but the black pepper mites can't stand it. Unfortunately it is not a repellent, only a killer. You can spray it on them and they die but in a few minutes any from unsprayed areas will move back in to fill the empty niche. ...

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by Atomdancerrr
Fri Apr 25, 2008 1:11 am
Forum: Human Biology
Topic: Human Collembola Infestations
Replies: 47
Views: 132340

The Fiber Disease

... nanostructures”. Vogel and his team selected phospholipid membranes as molds. Phospholipids consist of a water-friendly head group and water-repellent tail groups (hydrocarbon chains). In aqueous surroundings, they line up tail to tail into double-layered membranes. If these are dried carefully, ...

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by London
Wed Dec 27, 2006 1:47 am
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 6244999

Transdermal meds, keratin, fat- and water- solubility

... allow it to keep water in the body? What does keratin have to do with this property of the epidermis? Why and/or how do the cells secrete a water-repellent glycoprotein (which is only briefly mentioned in my textbook, and NOT explained any further)? Maybe I'm just asking questions that we're not ...

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by gwentass
Tue Sep 26, 2006 10:24 pm
Forum: Human Biology
Topic: Transdermal meds, keratin, fat- and water- solubility
Replies: 3
Views: 12183


... to support the military. They invented the aerosol spray canister—dubbed the “bug bomb”—to dispense insecticides, and they tested and reported the repellent properties of DEET. ARS researchers also developed ultra-low-volume fogging equipment, and led the development of permethrin-treated military ...

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by Systemic
Thu Sep 21, 2006 10:34 am
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 6244999
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