calda

Calda is primarily a grammatical form in Italian. It is the feminine singular form of the adjective caldo, meaning hot or warm. It is used to describe feminine nouns and agrees in number and gender with the noun it modifies. For example, acqua calda means hot water, una giornata calda means a hot day. The corresponding masculine form is caldo, and the plural forms are caldi (masculine) and calde (feminine). The word derives from Latin calidus and is cognate with other Romance-language words for heat.

Calda also appears in compound words derived from the root cald-, such as caldaia (boiler), reflecting related concepts of heat or warmth. The root forms are shared across related terms and maintain a semantic link to heat.

In addition to its role as an adjective, Calda is used as a surname in some cultures, and as a toponym in limited regions. It is not a common noun in English, and outside Italian it appears primarily in linguistic or cultural discussions of Italian vocabulary or in discussions of proper names.

Overall, calda serves as a key example of gender agreement in Romance languages and illustrates how a single root related to heat can generate multiple related forms in Italian.