noun a gesture, action, or sound that is used to convey information or instructions
verb to send a signal
In engineering, a signal is a measurable quantity that varies over time or space and conveys information about a system.
In computer science, a signal is a notification that an event has occurred, often used in programming for inter-process communication or handling asynchronous events.
In physics, a signal is a physical quantity that carries information and can be used to transmit messages or data.
In telecommunications, a signal refers to an electromagnetic or electrical impulse that carries information from one point to another.
In the context of writing, 'signal' can refer to a key point or idea that the author is trying to communicate clearly to the reader. Writers often use signals such as transitional phrases or topic sentences to guide the reader through their arguments or narratives.
Psychologists may use the term 'signal' to describe a behavior or action that communicates a specific message or emotion. They may also use signals in the context of therapy to help clients identify and interpret their own thoughts and feelings.
In marketing, 'signal' can refer to any form of communication or messaging used to promote a product or service to potential customers. Marketers may use signals such as advertisements, social media posts, or branding elements to attract and engage their target audience.
Financial analysts may use 'signal' to describe an event, trend, or indicator that provides insight into the future performance of a stock, bond, or market. They analyze signals such as interest rates, earnings reports, and economic data to make investment recommendations.
In software development, 'signal' can refer to a message or notification sent between different components of a program to trigger a specific action or function. Developers may use signals to communicate between different parts of a system or to handle asynchronous events.