radar

名词 n. 动词 v.

中文释义

英 /ˈɹeɪdɑː/ 美 /ˈɹeɪˌdɑɹ/

英文释义

名词 n.

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

— They were able to find the enemy fleet using radar.
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.; In full secondary radar: a method of detecting a distant object and determining its position, velocity, or other characteristics by analysing signals transmitted by the object in response to radio waves sent towards the object. broadly,uncountable
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.; Often preceded by a descriptive word: a system using one of the above detection methods, differentiated by configuration or platform, frequency, power, and other technical attributes. countable

— The Ministry of Defence funded the development of an entirely new radar and improved avionics.
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.; An installation of the apparatus for operating one of the above detection systems. countable

— Each of these aircraft has been upgraded with a new radar and a more powerful engine.
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. broadly,uncountable
A superior ability to detect something; an awareness, an intuition. countable,figuratively

— His sensitive radar for hidden alliances keeps him out of trouble.

动词 v.

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

— This was no ordinary signal for help that Baby-John was radaring to outer space, but a call that had to be heeded, for he had just seen two hard guys go down for the final count— […]

词形变化

radars plural radars present,singular,third-person radaring participle,present radared participle,past radared past

词汇关系

衍生词

active radar antiradar below the radar bistatic radar -dar Doppler radar drop off the radar fall off the radar fly under the radar gaydar georadar hetdar LIDAR multifunction array radar nonradar off the radar on someone's radar on someone's radar screen on the radar photoradar precision approach radar primary radar primary surveillance radar PSR racon radar altimeter radar astronomy radar chart radar cross section radar detector radar dome radargram radar gun radar horizon radar image radarkymogram radarless radarlike radarman radarmeteorological radar meteorology radarmeteorology radar picket radar reflector radarscope radar telescope radar trap radome secondary radar secondary surveillance radar SSR slip under the radar subradar under the radar weather radar

词源

词源 1

Etymology tree
Latin radiusder.
English radio-
Proto-Indo-European *kʷelh₁-der.
Ancient Greek τῆλε (têle)lbor.
French télé-
Proto-Indo-European *gerbʰ-
Proto-Hellenic *grə́pʰō
Ancient Greek γράφω (gráphō)
Ancient Greek -γράφος (-gráphos)bor.
Latin -graphuslbor.
French -graphe
French télégraphebor.
English telegraph
Proto-Indo-European *-yós
Proto-Italic *-ios
Old Latin -ios
Latin -ius
Latin -ia
Old French -ieder.
Middle English -ie
Middle English -y
English -y
English telegraphy
English radiotelegraphyclip.
English radio
Proto-Indo-European *de
Proto-Indo-European *-h₁
Proto-Indo-European *déh₁
Proto-Italic *dē
Latin dē
Latin dē-
Proto-Indo-European *(s)teg-der.
Proto-Italic *tegō
Latin tegō
Latin dētegō
Proto-Indo-European *-tis
Proto-Indo-European *-Hō
Proto-Indo-European *-tiHō
Proto-Italic *-tiō
Latin -tio
Latin dētēctiōder.
Latin dētēctiōnembor.
English detection
Proto-Indo-European *h₂ent-
Proto-Indo-European *-s
Proto-Indo-European *h₂énts
Proto-Indo-European *-i
Proto-Indo-European *h₂énti
Proto-Germanic *andi
Old English and
Middle English and
English and
Proto-Indo-European *(H)rek-der.
Proto-Celtic *reketi
Gaulish *rekosbor.?
Proto-Indo-European *h₃reǵ-der.
Proto-Germanic *rinkanąder.
Proto-Germanic *rankaz
Frankish *rankbor.?
Vulgar Latin *rencus
Old French reng
Proto-Italic *-āzi
▲
Latin -ereinflu.
Latin -āre
Old French -ier
Old French rengierbor.
Middle English rengen
English range
Proto-Germanic *-ungō
Old English -ung
Middle English -ynge
English -ing
English ranging
English RADAR
English radar
The noun is derived from RADAR by anacronymic evolution. RADAR is an acronym of ra(dio) d(etection) a(nd) r(anging) which was coined by Lieutenant-Commander Samuel M. Tucker and Lieutenant-Commander F. R. Furth of the United States Navy in November 1940.
The verb is probably derived from the noun.

词源 2

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英文释义：7 条

词形变化：5 个

词源：2 条

词汇关系：55 条