RADAR Meaning and
Definition
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Radar stands for "Radio Detection and Ranging." It refers to a system or device that uses radio waves to detect and determine the distance, direction, speed, and altitude of objects in the surrounding environment. Radar technology is widely used in various applications, including aviation, meteorology, military operations, navigation, and traffic control.
Radar operates on the principle of transmitting radio waves from a radar transmitter. These waves, known as radar signals, propagate through the atmosphere and when they encounter an object, they reflect back towards the radar receiver. The receiver then measures the time it takes for the signal to return, enabling the determination of the object's distance. By analyzing the changes in frequency and phase of the reflected waves, radar also allows for the measurement of an object's speed and direction.
Radar systems can operate in different frequency bands, such as X-band and S-band, depending on the specific application and environmental conditions. They can have varying ranges and resolutions, allowing detection and tracking of objects ranging from aircraft and ships to weather patterns and small targets.
The invention of radar technology is credited to the Scottish physicist Sir Robert Watson-Watt in the early 20th century. Radar has since become an integral part of modern technology, providing crucial information for surveillance, safety, and communication in numerous industries and sectors.
Top Common Misspellings for RADAR *
* The statistics data for these misspellings percentages are collected from over 15,411,110 spell check sessions on www.spellchecker.net from Jan 2010 - Jun 2012.
Other Common Misspellings for RADAR
Etymology of RADAR
The word "radar" is an acronym formed from the phrase "radio detection and ranging". The term was coined during World War II when radar technology was first developed. It is a combination of the words "radio", referring to the use of radio waves, and "detection and ranging", which describes the purpose of the technology—to detect and measure the distance of objects using radio waves.
Idioms with the word RADAR
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drop beneath the/sb's radar, at fall off/drop off the radar
The idiom "drop beneath the/somebody's radar" or "fall off/drop off the radar" refers to a situation where someone or something goes unnoticed or becomes less significant or important to someone or a group of people. It typically implies that the person or thing is no longer receiving attention or is no longer under close scrutiny. This idiom often suggests a decrease in visibility, attention, or interest.
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on sb's radar (screen)
The idiom "on someone's radar (screen)" refers to something or someone that has captured someone's attention or awareness. It means that the person is actively monitoring or considering that particular thing or person.
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fly beneath (the/someone's) radar
The idiom "fly beneath (the/someone's) radar" means to go unnoticed or remain undetected, typically by intentionally keeping a low profile or avoiding attention. It often refers to situations where someone is able to operate, succeed, or progress without attracting attention, scrutiny, or interference.
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drop off the radar
The idiom "drop off the radar" refers to someone or something disappearing or becoming untraceable, often referring to a person who withdraws from public view or loses contact, activities, or visibility.
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beneath (the/someone's) radar
The idiom "beneath (the/someone's) radar" refers to something or someone that is not detected or noticed by others, often referring to activities or actions that are carried out discreetly or secretly. It suggests that something or someone is not gaining attention or recognition, potentially due to being overlooked or underestimated.
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slip beneath the/(one's) radar
The idiom "slip beneath the/(one's) radar" means to go unnoticed or undetected by someone or something, typically due to lack of attention or vigilance. It suggests that someone or something has managed to evade detection or scrutiny, often out of inadvertence or oversight.
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fall off the radar
The idiom "fall off the radar" typically means to disappear, go unnoticed, or be forgotten about. It refers to someone or something becoming unnoticed or no longer being the center of attention or focus.
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on/off the radar screen
The idiom "on/off the radar screen" refers to something or someone that is either being actively monitored, noticed, or focused on (on the radar screen) or not being monitored, noticed, or focused on (off the radar screen). It suggests the level of awareness or attention that something or someone receives.
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drop beneath the/(one's) radar
The idiom "drop beneath the/(one's) radar" means to go unnoticed or undetected by someone or something, often referring to a situation or an individual who is able to avoid scrutiny or observation. It implies that someone or something has managed to remain hidden or invisible, making it difficult for others to become aware of their presence or actions.
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below/under the radar
The idiom "below/under the radar" refers to something or someone that is not being noticed or detected, often intentionally. It indicates a situation where actions or activities are happening discreetly or quietly, without garnering attention or scrutiny.
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be off the radar
The idiom "be off the radar" refers to something or someone that is not being noticed or receiving attention, often intentionally. It implies being out of sight or undetected, typically in a figurative sense. This expression can be used to describe a person or thing that is not in the focus of attention or has intentionally chosen to remain unnoticed or uninvolved.
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fall off off the radar
The idiom "fall off the radar" refers to something or someone disappearing or becoming less noticeable, usually in terms of attention or relevance. It typically implies that the subject is no longer being considered, acknowledged, or monitored.
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fall off/drop off the radar
The idiom "fall off/drop off the radar" means to disappear, become unnoticed, or be forgotten. It is often used when referring to a person or thing that was previously prominent or actively involved but has now become less visible, relevant, or influential. It implies that the person or thing has lost attention, popularity, or relevance and is no longer being monitored or considered.
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be on the radar (screen)
The idiom "be on the radar (screen)" means to be noticed, recognized, or considered. It refers to someone or something catching attention or being within the scope of awareness or interest. It suggests that the person or thing is being observed or monitored, like an object appearing on a radar screen.
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fly under (the/someone's) radar
The idiom "fly under (the/someone's) radar" means to go unnoticed, undetected, or to go about one's activities without attracting attention or scrutiny. It is often used to describe situations where someone or something successfully avoids detection or maintains a low profile.
Similar spelling words for RADAR
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