信号

xìn hào
HSK 2Noun (名)

Basic Meaning

n
Often used as the object of verbs like 打, 发, or 接收 (dǎ, fā, jiēshōu - send, receive).
A light, wave, sound, movement, etc., used to transmit information or an order; a signal.
用来传递信息或命令的光、电波、声音、动作等。
Words:
信号灯信号枪打信号发信号
Synonyms:
记号暗号暗记讯号
Sentences:
  1. 司(sī)机(jī)看(kàn)到(dào)信(xìn)号(hào)灯(dēng)变(biàn)成(chéng)红(hóng)色(sè)，立(lì)刻(kè)停(tíng)车(chē)。
    The driver saw the traffic signal turn red and stopped immediately.
  2. 登(dēng)山(shān)队(duì)伍(wǔ)用(yòng)信(xìn)号(hào)枪(qiāng)发(fā)出(chū)了(le)求(qiú)救(jiù)信(xìn)号(hào)。
    The climbing team used a flare gun to send a distress signal.
  3. 他(tā)用(yòng)手(shǒu)势(shì)给(gěi)大(dà)家(jiā)打(dǎ)了(le)一(yī)个(gè)信(xìn)号(hào)，让(ràng)我(wǒ)们(men)安(ān)静(jìng)。
    He gave us a signal with a hand gesture, telling us to be quiet.
n
A more technical sense, commonly used with words like 数字 (digital), 模拟 (analogue), 强 (strong), 弱 (weak).
In telecommunications, an electrical/electronic signal; the current, voltage, or radio wave that carries information.
利用电流或电压、无线电波等传送信息时，带有信息的电流或电压、无线电波等称为电信号，简称信号。
Words:
电信号无线信号
Synonyms:
讯号
Sentences:
  1. 房(fáng)间(jiān)里(lǐ)的(de)无(wú)线(xiàn)信(xìn)号(hào)不(bù)太(tài)好(hǎo)，我(wǒ)上(shàng)网(wǎng)很(hěn)慢(màn)。
    The Wi-Fi signal in the room isn't very good, so my internet is slow.
  2. 工(gōng)程(chéng)师(shī)在(zài)分(fēn)析(xī)设(shè)备(bèi)输(shū)出(chū)的(de)电(diàn)信(xìn)号(hào)。
    The engineer is analyzing the electrical signal output by the device.
  3. 这(zhè)个(gè)芯(xīn)片(piàn)可(kě)以(yǐ)把(bǎ)声(shēng)音(yīn)转(zhuǎn)换(huàn)成(chéng)数(shù)字(zì)信(xìn)号(hào)。
    This chip can convert sound into a digital signal.

Characters Breakdown

HSK 2
xìn信

letter; believe

HSK 1
hào háo号

[day number in a date]; number (in a series)