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Vigilance may refer to: Alertness; Vigilance, a creature ability in the Magic: The Gathering collectible card game; Vigilance, by Threat Signal; Vigilance (behavioural ecology), the watchfulness of prey for nearby predators; Vigilance (psychology), the ability to maintain attention and alertness over prolonged periods of time
The word is formed from "alert", which comes from the Italian all'erta (on the watch, literally: on the height; 1618). [citation needed] Wakefulness refers mainly to differences between the sleep and waking states; vigilance refers to sustained alertness and concentration. Both terms are sometimes used synonymously with alertness.
Vigilantism and the vigilante ethos existed long before the word vigilante was introduced into the English language. There are conceptual parallels between the medieval aristocratic custom of private war or vendetta and the modern vigilante philosophy.
A thesaurus (pl.: thesauri or thesauruses), sometimes called a synonym dictionary or dictionary of synonyms, is a reference work which arranges words by their meanings (or in simpler terms, a book where one can find different words with similar meanings to other words), [1] [2] sometimes as a hierarchy of broader and narrower terms, sometimes simply as lists of synonyms and antonyms.
Vigilance decrement is defined as "deterioration in the ability to remain vigilant for critical signals with time, as indicated by a decline in the rate of the correct detection of signals". [4] Vigilance decrement is most commonly associated with monitoring to detect a weak target signal.
A synonym is a word, morpheme, or phrase that means precisely or nearly the same as another word, morpheme, or phrase in a given language. [2] For example, in the English language , the words begin , start , commence , and initiate are all synonyms of one another: they are synonymous .
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The cause for the start of the project was the arrival of OpenOffice.org in 2002, which was missing the thesaurus of its parent, StarOffice, due to its licensing.. OpenThesaurus filled that gap by importing possible synonyms from a freely available German/English dictionary and refining and updating these in crowdsourced work through the use of a web ap