sinal

Also known as indicator, indication

thumb|Biohazard sign with a conventional symbol having no inherent relationship to what it represents thumb|right| An airport sign at La Guardia Airport thumb|A natural sign in the environment indicating recent human activity A sign is an object, quality, event, or entity whose presence or occurrence indicates the probable presence or occurrence of something else. A natural sign bears a causal relation to its object—for instance, thunder is a sign of storm, or medical symptoms a sign of disease. A conventional sign signifies by agreement, as a full stop signifies the end of a sentence; similar

AI overview

A sign is an object, quality, event, or entity that indicates the probable presence or occurrence of something else—for example, thunder signals an approaching storm, or a red light signals that you should stop. Signs matter because they allow us to understand and communicate about things we cannot directly perceive: natural signs work through causal relationships (like symptoms indicating illness), while conventional signs rely on shared agreements about meaning (like a stop sign's meaning).

AI-generated from the Wikipedia summary — may contain errors.