Signal



GRE 蓝宝 考研

解释

GRE 红宝书

• n. 信号; v. 发信号; adj. 显著的
• ［英］ 信号 ( something intended to warn, command, or give a message) 发信号 ( give a signal)
• ［类］ 反义词: unremarkable ( 不明显的)
• ［记］ sign ( 信号) +al

Webster Collegiate

I. noun

• Etymology: Middle English, from Medieval Latin signale, from Late Latin, neuter of signalis of a sign, from Latin signum
• Date: 14th century
• 1. sign, indication
• 2.
  • a. an act, event, or watchword that has been agreed on as the occasion of concerted action
  • b. something that incites to action
• 3. something (as a sound, gesture, or object) that conveys notice or warning
• 4.
  • a. an object used to transmit or convey information beyond the range of human voice
  • b. the sound or image conveyed in telegraphy, telephony, radio, radar, or television
  • c. a detectable physical quantity or impulse (as a voltage, current, or magnetic field strength) by which messages or information can be transmitted

II. verb (signaled or signalled; signaling or signalling)

• Date: 1805
• transitive verb
  • 1. to notify by a signal <signal the fleet to turn back>
  • 2.
    • a. to communicate or indicate by or as if by signals <signaled the end of an era>
    • b. to constitute a characteristic feature of (a meaningful linguistic form)
• intransitive verb
  • to make or send a signal
• ? signaler or signaller noun

III. adjective

• Etymology: modification of French signalé, past participle of signaler to distinguish, from Old Italian segnalare to signal, distinguish, from segnale signal, from Medieval Latin signale
• Date: 1627
• distinguished from the ordinary ; notable <a signal achievement>

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