Immobilizers

Part of speech: noun

Definitions

1. Devices designed to prevent the movement of a vehicle by disabling its engine or transmission
2. Systems used in security applications to restrict access or movement of items or individuals
3. Mechanisms employed in automotive contexts and alarm systems to ensure that unauthorized use or theft is impeded

Etymology: Immobilizers are plural of "immobilizer," an agent noun built from "immobilize" plus the suffix "-er," which denotes a person or thing that performs an action. The verb itself is formed from "immobile," from Latin "immobilis," meaning "not movable," with the prefix "in-" meaning "not" attached to "mobilis" ("movable"). The suffix "-er" traces back through Old French "-ier," which descends from Latin "-arius," a suffix attaching to nouns denoting a person or thing connected with something, so the ending carries that sense of "one connected with" or "one that does." Because the word is a straightforward combination of an existing verb and a common suffix, its history is largely transparent: the modern sense of a device that prevents movement, such as a vehicle immobilizer that stops an engine from starting, follows directly from the idea of rendering something not movable.

Synonyms: stabilizers, restrainers

Antonyms: mobilizers