1 the act of protecting or the condition of being protected
2 something that protects
a the imposition of duties or quotas on imports, designed for the protection of domestic industries against overseas competition, expansion of domestic employment, etc.
b (Also called)
protectionism the system, policy, or theory of such restrictions
4 a document that grants protection or immunity from arrest or harassment to a person, esp. a traveller
5 (Mountaineering) security on a climb provided by running belays, etc.
a (Also called)
protection money money demanded by gangsters for freedom from molestation
b freedom from molestation purchased in this way
protectionist n, adj
n (Metallurgy) a technique for protecting metal structures, such as steel ships and pipelines, from electrolytic corrosion by making the structure the cathode in a cell, either by applying an electromotive force directly or by putting it into contact with a more electropositive metal
See also →
n (Botany) the protection against a viral infection given to a plant by its prior inoculation with a related but milder virus
n (in Britain) safeguards for individuals relating to personal data stored on a computer
n the minimum acceptable ratio between the amplitudes of a wanted radio or television broadcast signal and any interfering signal
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"Collins English Dictionary 5th Edition first published in 2000 © HarperCollins Publishers 1979, 1986, 1991, 1994, 1998, 2000 and Collins A-Z Thesaurus 1st edition first published in 1995 © HarperCollins Publishers 1995"