Vjetra

Vjetra is a term connected with winds in South Slavic languages. In Croatian, Bosnian, and Serbian, the ordinary noun for wind is vjetar; vjetra is its genitive singular form and appears in phrases such as snaga vjetra (the power of the wind) or as part of idiomatic expressions and some place names. As a grammatical form, vjetra does not denote a specific meteorological category by itself, but it is frequently encountered in composition and in classic or poetic usage.

The etymology traces vjetar to the Proto-Slavic root *vьtrъ*, related to Polish wiatr and Russian ветер (veter). The convergence across Slavic languages reflects a shared concept of the moving air.

Wind contains several physical aspects: it is air in horizontal movement caused by pressure differences, arising from unequal heating of the Earth's surface. It is characterized by speed and direction, measured with anemometers and described on scales such as Beaufort. Wind patterns influence weather, climate, and human activity, including sailing, agriculture, and energy production. In Adriatic and broader Mediterranean contexts, local winds are often named by direction and attributed distinct seasonal behaviors.

Within culture and language, vjetar and its forms appear in folklore, poetry, and common speech as symbols of change, movement, and travel. In modern usage they are standard terms in meteorology, climatology, and related disciplines, as well as everyday language.