synligt

Synligt is a word used in Swedish and, in related forms, in other Scandinavian languages to denote visibility. As an adjective it means that something can be seen or perceived with the eye, and it is employed in everyday and technical language to describe perceptible objects or signs. The form also appears in predicative or adverbial positions, as in phrases that express that something is visible or evident. Common contexts include phrases such as ett synligt tecken (a visible sign) or synligt bevis (visible evidence) and the scientific term synligt ljus (visible light).

The word has cognates in other Scandinavian languages, reflecting a shared Germanic heritage. Danish and Norwegian varieties show parallel forms such as synligt or synlig, used with similar meaning, though exact usage can vary by dialect and grammatical role. Historically, the roots are connected to the concept of sight and perception, aligning with related terms in neighboring languages.

In science and general discourse, synligt ljus designates the portion of the electromagnetic spectrum detectable by the human eye, roughly from 380 to 750 nanometers. In contrast, terms like osynligt (invisible) distinguish non-visible radiation, such as ultraviolet or infrared, from what humans can directly see. Overall, synligt functions as a concise descriptor of perceptibility and is a common building block in descriptions of perception, measurement, and optical phenomena.