warning signal
Học thuậtThân thiện
Definition
Noun: 1. A signal that serves to warn or caution: A perceptible indication, often visual or auditory, that alerts someone to potential danger, a problem, or an undesirable situation. It is designed to prompt attention and a change in behavior to avoid harm.
Usage
- The primary function of a warning signal is to alert and prompt a preventive or evasive response.
- It is typically an automated or standardized sign of impending danger.
- It can be used in both literal contexts (e.g., alarms) and figurative contexts (e.g., early signs of trouble).
Examples
Advanced Usage
- Figurative Use: Used to describe an early sign or indicator of a future problem.
- The company's declining sales were a clear warning signal to investors.
- In Biology/Zoology: Refers to traits or behaviors in animals that signal danger, such as coloration or sounds.
- The bright colors of the poison dart frog act as a warning signal to predators.
Variants and Related Words
- Alarm (n): A loud signal of danger.
- Alert (n): A warning of immediate danger.
- Caution (n): Care taken to avoid danger; a warning.
- Siren (n): A device that makes a loud, prolonged sound as a signal or warning.
- Warning light (n): A visual warning signal.
Synonyms
- Alert
- Alarm
- Caution
- Signal
- Beacon
Related Phrases
- Early warning signal: An initial sign that indicates a potential future problem, allowing for early action.
- An increase in seismic activity is an early warning signal for a possible volcanic eruption.
- To sound a warning signal: To issue a warning.
- The report sounded a warning signal about the state of the economy.
Notes
- The term is often compound, but as a single lexical unit, it specifically denotes the that conveys a warning. It is distinct from the act of warning.
- In technical and safety contexts, warning signals are often regulated and standardized (e.g., in aviation, maritime, or industrial settings).
Noun
- an automatic signal (usually a sound) warning of danger