key

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Key

(),
Ernst A.H., Swedish anatomist and physician, 1832-1901. See: foramen of Key-Retzius, sheath of Key and Retzius.
Farlex Partner Medical Dictionary © Farlex 2012

key

a character of special significance in an organism. Such characters are used in a system for determining the identity of an organism on the basis of the presence or absence of a succession of characters. Usually such keys are DICHOTOMOUS (2); that is to say, at each step there is a choice between two possibilities. Keys, however, may have more than two characters at each step and there is a gradual elimination of absent characters until identification is made.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
As keyless technology has grown in popularity, more and more cars have vanished from driveways as their owners sleep.
The Audi TT RS could also be stolen in 10 seconds - although only when its optional keyless entry system was active and its motion sensor technology had not disabled the keyfob.
The ABI provided three steps to reduce the risk of keyless car thefts:
The new ratings assess whether the latest measures to specifically address the vulnerability of the keyless entry/start system, have been adopted.
Six of the 11 vehicles launched this year have been given a 'Poor' rating as the keyless entry/start system they have as an option has no security measures to prevent theft by criminals using the so-called 'Relay Attack' technique.
"Keyless car technology has its pitfalls and I'm asking the public to take some simple steps to prevent crime like this being repeated.
The other car in the top five - the Vauxhall Corsa - was considered to be safe from attacks as it does not feature keyless entry and start.
analysed research from the General German Automobile Club (ADAC) to find out the impact of keyless attacks on the most popular cars on sale in the UK in 2018.
based its report on data from the General German Automobile Club (ADAC), a roadside recovery organisation, which saw 237 keyless cars tested and found that all but three of them are susceptible to so-called relay attacks.
In an analysis of more than 237 cars tested, it found of the five best sellers, only the Vauxhall Corsa was deemed safe from such attacks - because it cannot be purchased with keyless entry and start.
Detective Constable Allan Lawley said: "We are doing all we can to tackle this issue and bring those responsible to justice, but there are simple, inexpensive steps owners of keyless entry cars can take to minimise the chances of their cars being stolen in this way.