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v. re·pelled, re·pel·ling, re·pels
1. To ward off or keep away; drive back: repel insects.
2. To offer resistance to; fight against: repel an invasion.
3. To refuse to accept or submit to; reject: a company that was trying to repel a hostile takeover.
4. To refuse to accept (someone); spurn.
5. To cause aversion or distaste in: Your rudeness repels everyone. See Synonyms at disgust. See Usage Note at repulse.
6. To be resistant to; be incapable of absorbing or mixing with: Oil repels water.
7. Physics To present an opposing force to; push back or away from by a force: Electric charges of the same sign repel one another.
1. To offer a resistant force to something.
2. To cause aversion or distaste: behavior that repels.

[Middle English repellen, from Old French repeller, from Latin repellere : re-, re- + pellere, to drive; see pel- in Indo-European roots.]

re·pel′ler n.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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The repeller incorporates a PIR motion sensor that activates the product when a warm body enters the controlled area.
This, in turn, allowed them to gather the first real evidence of the existence of the Dipole Repeller, which sits in the same axis as the Shapley Concentration.
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Customers who purchase a qualifying Mossberg turkey gun will receive a free Turkey Thugs decoy or ThermaCELL Mosquito Repeller. More than 55 Mossberg turkey guns qualify for the promotion, including the new Flex 500 Turkey/Defense Combo.
Additionally, the EI/FI/FD combination source makes it easy to switch between EI and FI by simply removing the EI repeller probe and inserting the FI emitter probe.
But the patent-pending technology incorporated into Venture's ForceField Bed Bug Pest Repeller is chemical-free, relying solely on ultrasonic waves to drive the insects away.
Using a Passive Infra Red detection system, the Mega Sonic Repeller detects and repels cats, dogs and foxes without harming them.
I don't know whether it's the shiny surface or the crinkly sound it makes when touched that keeps them off, but it turns out aluminum foil is a great varmint repeller.
The Han controlled the sky with their powerful floating cities, disintegrator and repeller ray equipped airships, and communication technology.
tested a number of cat repellents on the market, including chemical granules, liquids, powders and ultrasonic devices -- a motion activated battery-powered sprinkler called a scarecrow and a Cat & Dog Repeller, whose sensor detects movement and heat and triggers a burst of variable ultrasound said to deter dogs, foxes and cats.
Other innovations in the consumer electronics and lighting segment include: the Amazing Lantern, which features a super-bright LED bulb as well as a built-in mosquito repeller, for $30; the Wirefish Wire Manager, which keeps the cords and wires of electronics neatly bundled, for $8; and the ClarkCable, a wire identifier, for $8.