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(Mr. Ng 不推薦使用 Google 翻譯!)
IELTS BNC: 1960 COCA: 2078


1 signal /ˈsɪgnl̟/ noun
plural signals
1 signal
plural signals
Learner's definition of SIGNAL
: an event or act which shows that something exists or that gives information about something : sign信号(事件或行为)
often + of
: something (such as a sound, a movement of part of the body, or an object) that gives information about something or that tells someone to do something信号,暗号(声音、身体动作或某物体等)
: a piece of equipment with colored lights that is used on railways and roads to tell people when to go, to slow down, or to stop交通信号灯;红绿灯
: a message, sound, or image that is carried by waves of light or sound(传播信息、声音、图像等的光波或声波的)信号
: a wave of light or sound that carries a message, sound, or image(传播信息、声音或图像的)光波,声波

busy signal

see 1busy

mixed signals

see mixed
2 signal /ˈsɪgnl̟/ verb
signals US signaled or British signalled US signaling or British signalling
2 signal
signals US signaled or British signalled US signaling or British signalling
Learner's definition of SIGNAL
[+ object] : to be a sign of (something) : to show the existence of (something)标志;表明
: to make a sound or motion that tells someone something发信号;示意
[no object]
[+ object]
3 signal /ˈsɪgnl̟/ adjective
3 signal
Learner's definition of SIGNAL
always used before a noun formal
: very important or great : significant重大的;显要的

— signally

/ˈsɪgnəli/ adverb
IELTS BNC: 1960 COCA: 2078


1 of 3


sig·​nal ˈsig-nᵊl How to pronounce signal (audio)
: an act, event, or watchword that has been agreed on as the occasion of concerted action
: something that incites to action
: something (such as a sound, gesture, or object) that conveys notice or warning
: an object used to transmit or convey information beyond the range of human voice
: the sound or image conveyed in telegraphy, telephony, radio, radar, or television
: a detectable physical quantity or impulse (such as a voltage, current, or magnetic field strength) by which messages or information can be transmitted


2 of 3


signaled or signalled; signaling or signalling ˈsig-nə-liŋ How to pronounce signal (audio)

transitive verb

: to notify by a signal
signal the fleet to turn back
: to communicate or indicate by or as if by signals
signaled the end of an era
: to constitute a characteristic feature of (a meaningful linguistic form)

intransitive verb

: to make or send a signal
signaler noun
or signaller


3 of 3


: distinguished from the ordinary : notable
a signal achievement

Example Sentences

Noun He likes her but he is sending the wrong signals with his constant teasing. The teacher gave us the signal to finish what we were working on and hand in our tests. Faulty wiring in the train station caused a signal to malfunction. Verb Robins signal the arrival of spring. The election results surely signal the start of a new era. A lock on the suitcase might signal that there's something of value inside. Did he signal before he made the left turn? They signaled at me to come over to their table. He signaled us that it was time to begin the meeting. The umpire signaled a strike. Adjective Is he worthy of such a signal honor? the Louisiana Purchase is cited by many historians as one of the most signal events in American history See More
Recent Examples on the Web
Because the brain finds uncertainty aversive, the emotional realm will respond to unpredictability with a signal. WIRED, 11 Sep. 2022 According to police, a man was walking across a marked crosswalk against a green signal when he was struck by a gold Cadillac, driven by 25-year-old Devi Marie Stubblefield. Vic Verbalaitis, The Arizona Republic, 11 Sep. 2022 Anderson was impressed by a crowd that hampered Alabama signal calls at the line of scrimmage all game. Jim Vertuno, ajc, 10 Sep. 2022 For example, using the new lane-change assist feature allows the driver to remain in hands-free mode by having the car maneuver to an adjacent lane simply by tapping the turn signal stalk. Drew Dorian, Car and Driver, 8 Sep. 2022 The council also approved moving forward with $233,000 in audio and visual improvements to the council chambers and television studio after struggling with sound, video and signal quality since the onset of the pandemic. Carrie Napoleon, Chicago Tribune, 7 Sep. 2022 Hill wrote the man, Mayor Paul Bailey’s son, citations for an alleged seatbelt violation and two turn signal infractions. Paighten Harkins, The Salt Lake Tribune, 6 Sep. 2022 Listening to Khaled’s albums is like searching for blessings amidst the chaff, and the signal-to-noise ratio is generally low. Mosi Reeves, Rolling Stone, 26 Aug. 2022 These phones all have Qualcomm's current X65 modem, which incorporates new antenna-tuning technology to make the most of weak-signal areas. Sascha Segan, PCMAG, 11 Aug. 2022
According to Purina, cats’ kneading may serve a territorial purpose, since their paws have scent glands which release pheromones that signal to other cats. Jacob Livesay, USA TODAY, 19 June 2022 Calhoun’s appointment, however, could signal a real shift of political power to Black council members, since the mayor, who is white, also has the opportunity to vote. Rebecca Griesbach | Rgriesbach@al.com, al, 30 Aug. 2022 High inflation, stock market volatility and concerns over slower economic growth amid rising interest rates signal tougher times ahead. Laura Kreutzer, WSJ, 29 Aug. 2022 Sununu’s involvement in the Gunstock dispute could signal a turning point, said political consultant Scott Spradling. Holly Ramer, BostonGlobe.com, 28 Aug. 2022 Sununu’s involvement in the Gunstock dispute could signal a turning point, said political consultant Scott Spradling. Holly Ramer, ajc, 28 Aug. 2022 When whiskers are moved due to air currents or other external stimuli, the whiskers signal the brain to trigger the blink reflex, thus, closing the eyelids and protecting the eyes. Mythili Devarakonda, USA TODAY, 27 Aug. 2022 The unemployment rate can signal a healthy (or unhealthy) economy. Q.ai - Powering A Personal Wealth Movement, Forbes, 26 Aug. 2022 The drills marked a show of force in retaliation for a visit by U.S. House Speaker Nancy Pelosi, and could signal a new, threatening phase for the island, Asia’s most dangerous flashpoint, experts say. Ann Scott Tyson, The Christian Science Monitor, 26 Aug. 2022
These quick-release plugs can be easily detached from the earpieces and create a robust connection without signal loss. Mark Sparrow, Forbes, 3 Aug. 2022 Finally, Mora needs to see leadership from his signal caller. Joe Arruda, Hartford Courant, 14 Aug. 2022 The wireless transmission uses the latest version of Bluetooth which provides more signal range and a stable connection when streaming from any Bluetooth 5.2 compatible device. Mark Sparrow, Forbes, 12 Apr. 2022 The global tax agreement had appeared to be a signal achievement for Ms. Yellen, who helped salvage negotiations that were flailing in the final months of the Trump administration. Richard Rubin, WSJ, 16 July 2022 As of June 30, there were 599 vacancies for safety positions, including bus drivers, rail maintenance staff, and signal workers, up from 586 vacancies at the end of May. Globe Staff, BostonGlobe.com, 14 July 2022 After all, pricing serves as a medium to deliver a signal giving more information about a product and service, and without knowing the value associated with a foreign currency, one simply cannot infer levels of accurate information. Josh Wilson, Forbes, 11 July 2022 This can boost speeds, efficiency, and signal quality while simultaneously reducing errors and interference. Simon Hill, Wired, 28 June 2022 There will also be a new team of workers to replace outdated signal loops — patches of pavement near stoplights that trigger lights to change when a car activates them. David Garrick, San Diego Union-Tribune, 13 June 2022 See More

Word History



Middle English, from Medieval Latin signale, from Late Latin, neuter of signalis of a sign, from Latin signum


modification of French signalé, past participle of signaler to distinguish, from Old Italian segnalare to signal, distinguish, from segnale signal, from Medieval Latin signale

First Known Use


15th century, in the meaning defined at sense 1


1800, in the meaning defined at transitive sense 1


1591, in the meaning defined above

Time Traveler
The first known use of signal was in the 15th century
IELTS BNC: 1960 COCA: 2078


1sign/action/sound that sends a message標誌;動作;聲音ADJECTIVE | VERB + SIGNAL | SIGNAL + VERB | PREPOSITION ADJECTIVEclear, unmistakable清晰的/明確無誤的信號agreed, prearranged約好的/事先約定的信號conflicting, confusing, contradictory, mixed相互衝突的信號;讓人迷惑不解的信號;有歧義的信號wrong錯誤信號Laughing when you should be crying sends out the wrong signals to people.應該哭的時候卻笑,就向人們傳達了錯誤的信號。alarm, danger, distress, warning報警/危險/求救/警告信號hand, non-verbal, smoke, visual手勢;非語言信號;煙霧信號;視覺信號turn (NAmE) (汽車上的)轉向指示燈busy (NAmE) (engaged tone in BrE) (電話佔線時的)忙音All I get is a busy signal when I dial his number.我給他撥電話只能聽到佔線的忙音信號。buy, sell (both business商業) 買入/賣出信號A strong buy signal was issued to traders.交易員收到了強烈的買入信號。VERB + SIGNALgive (sb), make, send, send out(給某人)發信號;打信號When I give the signal, run!我一發信號,你就跑!interpret, read解讀信號The brain interprets the signals from the retina as light.大腦把來自視網膜的信號解讀為光。interpret sth as把⋯理解為信號The remark was interpreted as a signal that their government was ready to return to the peace talks.該言論被視作政府準備重回和平談判的信號。pick up, respond to領會信號;對信號作出反應Interviewers quickly learn to pick up non-verbal signals.採訪者很快學會讀懂非語言信號。act as作為信號The insect's yellow spots act as a warning signal to its predators.昆蟲身上的黃點是向其天敵發出的警告信號。SIGNAL + VERBcome from sth信號來自⋯Try to read the signals coming from the patient.要盡量讀懂病人發出的信號。indicate sth信號表示⋯the signals that can indicate danger可能預示危險的信號PREPOSITIONat a signal, on a signal按照信號At a prearranged signal, everyone started cheering.看到預先約好的信號,大家都開始歡呼起來。signal for示意⋯的信號She made a signal for the car to stop.她打了個手勢,讓汽車停下了。signal from, signal to來自⋯的/給⋯的信號Wait for the signal from the leader of your group.等你們組的組長發出信號。


2set of lights for drivers交通信號燈ADJECTIVE | VERB + SIGNAL | SIGNAL + VERB | SIGNAL + NOUN ADJECTIVErailroad, railway, traffic鐵路信號燈;交通信號燈VERB + SIGNALoperate操作信號燈SIGNAL + VERBbe on red/green, be red/green紅燈亮;綠燈亮The traffic signals were on red.交通信號亮着紅燈。fail信號燈失靈SIGNAL + NOUNbox (BrE) (鐵路上的)信號樓failure (BrE) 信號燈故障


3series of radio waves, chemical messages, etc.無線電波;化學信息ADJECTIVE | VERB + SIGNAL | SIGNAL + VERB | SIGNAL + NOUN | PREPOSITION ADJECTIVEfaint, weak微弱的信號strong強信號high-frequency, low-frequency高頻/低頻信號input, output輸入/輸出信號acoustic, analogue/analog, audio, chemical, digital, electrical, electronic, GPS, light, radar, radio, satellite, sonar, sound, television, TV, video, wireless聲學信號;模擬信號;音頻信號;化學信號;數字信號;電信號;電子信號;全球定位系統信號;光信號;雷達信號;無線電信號;衞星信號;聲納信號;音頻信號;電視信號;視頻信號;無線信號VERB + SIGNALcarry, pass, relay傳送/傳遞/中繼轉發信號The nerves carry these signals to the brain.神經把這些信號傳給大腦。amplify, boost放大/增強信號convert (sth into), scramble(把⋯)轉換成信號;對信號作擾碼處理The signal is scrambled into code before it is sent.發送信號之前要先擾碼,把它變成密碼。decode, encode解碼信號;把信號編碼emit, generate, produce, send, transmit發射信號;發出信號;發送信號detect, pick up, receive, respond to探測信號;接收信號;對信號作出回應This equipment can detect very low-frequency signals.這種設備能夠探測甚低頻信號。block, jam攔截/干擾信號It is possible to jam GPS signals in battle.在作戰時對全球定位系統的信號進行干擾是可能的。SIGNAL + VERBtravel信號傳播The digital signal travels down wires to the server.數字信號沿着線路傳到服務器。A light signal can travel well over 16 km before it halves in intensity.光信號傳播 16 公里以上強度才會減半。fade信號漸弱SIGNAL + NOUNintensity, strength信號強度PREPOSITIONsignal from來自⋯的信號a faint signal from the satellite衞星發出的微弱信號signal to向⋯發出的信號


1move your arms to give a signal打手勢ADVERB | PREPOSITION ADVERBfrantically瘋狂打手勢I saw her signal frantically to us.我看見她瘋了似的朝我們打手勢。PREPOSITIONfor示意⋯He raised his hand to signal for the waiter.他舉起手向侍者示意。to向⋯打手勢She tried to signal to the bus driver to stop.她試圖打手勢讓公共汽車司機停車。


2show/mark sth表明ADVERB | VERB + SIGNAL ADVERBclearly清楚地標誌These changes clearly signal the end of the welfare state as we know it.這些變化清楚地標誌着我們熟悉的福利國家的終結。effectively (especially BrE) 實際上表明A change of mind effectively signals a change in overall policy.改變主意實際上意味着整個政策有所改變。not necessarily不一定預示A fall in demand does not necessarily signal the death of the industry.需求的減少並不一定意味着該行業走向窮途末路。VERB + SIGNALappear to, seem to似乎/好像預示These events appeared to signal the end of an era.這些事件似乎預示着一個時代的結束。try to試圖表明be intended to, be meant to旨在/意欲表明This address was meant to signal a change in policy.這個講話意欲表明政策將有所改變。
IELTS BNC: 1960 COCA: 2078
Mr. Ng 不推薦使用 Google翻譯
^_^: Translate en To zh-TW


0_0: Translations of signal
  • # n.
    暗號: cipher, countersign, cypher, secret sign, secret signal, signal
    示意: hint, motion, signal
    手勢: gesture, sign, signal
    信號: semaphore, signal
    信號机: semaphore, signal, signaler
  • # v.
    摽: signal, fall
    發信號: signal
    示意: signal

0_0: Definitions of signal
  • # noun.
    - a gesture, action, or sound that is used to convey information or instructions, typically by prearrangement between the parties concerned.
    * the firing of the gun was the signal for a chain of beacons to be lit
    - an electrical impulse or radio wave transmitted or received.
    * equipment for receiving TV signals
    - an apparatus on a railroad, typically a colored light or a semaphore, giving indications to train engineers of whether or not the line is clear.
    * the driver of the mail train overran a signal at danger and ran into the rear of an express
  • # verb.
    - transmit information or instructions by means of a gesture, action, or sound.
    * hold your fire until I signal
  • # adjective.
    - striking in extent, seriousness, or importance; outstanding.
    * their signal failure to achieve a satisfactory solution to the problem

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