radar
/ˈɹeɪˌdɑɹ/
Frequency: Zipf frequency 4.20 in modern English
Meaning
noun
In full primary radar: a method of detecting a distant object and determining its position, velocity, or other characteristics by analysing radio waves (usually microwaves) which are sent towards the object and which reflect off its surfaces; also, the field of study of this method.
Uncountable
noun
In full primary radar: a method of detecting a distant object and determining its position, velocity, or other characteristics by analysing radio waves (usually microwaves) which are sent towards the object and which reflect off its surfaces; also, the field of study of this method.
Uncountable
noun
In full primary radar: a method of detecting a distant object and determining its position, velocity, or other characteristics by analysing radio waves (usually microwaves) which are sent towards the object and which reflect off its surfaces; also, the field of study of this method.
Countable
noun
In full primary radar: a method of detecting a distant object and determining its position, velocity, or other characteristics by analysing radio waves (usually microwaves) which are sent towards the object and which reflect off its surfaces; also, the field of study of this method.
Countable
noun
Often preceded by a descriptive word: a natural (for example, in an animal such as a bat) or human-made detection method based on the analysis of reflected signals other than radio waves, as light waves or sound waves; (countable) an instance of this.
Uncountable
verb
To use a radar apparatus (noun senses 1, 1.1, or 2) on (someone or something); to scan (someone or something) with, or as if with, radar.
Transitive verb
Example Sentences
- "They were able to find the enemy fleet using radar."
- "Although operational environments profoundly differ, both kinds of autonomous vehicles, groundcraft and aircraft, will still rely on conceptually the same sorts of sensors — cameras, radar and lidar — to perceive surroundings in real time."
- "The Ministry of Defence funded the development of an entirely new radar and improved avionics."
- "Evidence as to the audio monitor's reading is required to prove the [police] officer used the radar unit properly, and must be shown in order to secure a conviction for speeding when using radar."
- "Each of these aircraft has been upgraded with a new radar and a more powerful engine."
- "[T]he [depth] bombs must be tied to a grid of listening devices, radars and plotting instruments."
Etymology
Regional Pronunciation
- American English: /ˈɹeɪˌdɑɹ/
- British English: /ˈɹeɪdɑː/