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Related to preventer: Blowout preventer


v. pre·vent·ed, pre·vent·ing, pre·vents
1. To keep from happening; avert: took steps to prevent the strike.
2. To keep (a person or thing) from doing something; impede: prevented us from winning; prevented the disease from spreading.
3. Archaic
a. To anticipate or counter in advance.
b. To come before; precede.
To present an obstacle: There will be a picnic if nothing prevents.

[Middle English preventen, to anticipate, from Latin praevenīre, praevent- : prae-, pre- + venīre, to come; see gwā- in Indo-European roots.]

pre·vent′a·bil′i·ty, pre·vent′i·bil′i·ty n.
pre·vent′a·ble, pre·vent′i·ble adj.
pre·vent′er n.
Synonyms: prevent, preclude, avert, obviate, forestall
These verbs mean to stop or hinder something from happening, especially by advance planning or action. Prevent implies anticipatory counteraction: "Some contemporaries believed that capitalism and the rise of an international economy would prevent war among 'civilized' states" (John Howard Morrow).
To preclude is to exclude the possibility of an event or action: "a tranquillity which ... his wife's presence would have precluded" (John Henry Newman).
Avert and obviate imply that something, such as a difficulty or necessity, has been removed or avoided: The pilot's quick thinking averted an accident. The short duration of the journey obviated the need for large food supplies. Forestall usually suggests anticipatory measures taken to counteract, neutralize, or nullify the effects of something: We installed an alarm system to forestall break-ins.


1. a person or thing that prevents
2. (Nautical Terms) nautical a rope or other piece of gear rigged to prevent a sail from gybing
References in classic literature ?
During the most violent shocks of the Typhoon, the man at the Pequod's jaw-bone tiller had several times been reelingly hurled to the deck by its spasmodic motions, even though preventer tackles had been attached to it --for they were slack -- because some play to the tiller was indispensable.
Among the provisions the agency is seeking to un-do is one that requires a third-party to certify that an oil rigs blowout preventer is functioning properly.
Shortly after releasing its new flagship product Identity Theft Preventer to the desktop and personal computers industry, ShieldApps has released an Android version as well, that is meant to protect one's mobile device from potential privacy concerns and personal data leakage originating in 3rd party applications installed on the device, and moreover - provides an option to protect the device's webcam and microphone completely from any external breach attempt.
They also discovered that a diet high in folate, found in dark green vegetables and lentils, was an effective preventer.
The protective effect of a preventer builds up over a period of time so they need to be taken every day, usually in the mornings and evenings, even if you're feeling well.
There is particular concern surrounding Uganda's crime preventer program, for which there is no legal statute and scarce information about the exact mandate.
We can also help with tips such as rinsing the mouth with water after using a preventer inhaler, to help reduce the chance of oral thrush.
Dr Samantha Walker, Director of Research and Policy at Asthma UK, says: "If you are on the right preventer medicines at the right dose then you should manage.
Drain and winterize underground irrigation systems, including yard sprinklers and backflow preventers; wrap the backflow preventer with insulating material.
Advanced Logistics LLC has updated versions of its Satellite Assisted Marine Management (SAMM) and Preventer (preventative maintenance) software packages as well as its comprehensive, web-based Logistics Management Suite family of applications.
Tea Tree Herbal Bump Preventer After-Shave Elixir is made from aboriginal tea tee oil, organic coconut oil, unrefined African shea butter, jojoba oil and vitamins A and E.
Chemical Safety Board concentrated on what went wrong with the blowout preventer and blamed bad management and operations.