Cilindriche

Cilindriche is the feminine plural form of the Italian adjective cilindrico, meaning cylindrical. It is used to describe nouns that have the shape or properties of a cylinder, such as shapes, surfaces, or bodies with a circular cross-section and constant height.

In Italian, adjectives agree in gender and number with the nouns they modify. The related forms are cilindrico (masculine singular), cilindrici (masculine plural), cilindrica (feminine singular), and cilindriche (feminine plural). The term derives from the Latin cylinder, itself from the Greek kylindros, and it is used across languages with similar roots to describe cylindrical geometry and objects.

Usage spans several domains. In geometry and engineering, it may describe a cylindrical surface or a solid formed by extruding a base curve along an axis, though the noun for the solid is cilindro. In architecture and design, one speaks of colonne cilindriche or tubi cilindriche to denote cylindrical columns or tubes. In biology or everyday language, cilindriche can describe cylindrical organisms or structures, such as bacilli with a cylindrical shape. The phrase forme cilindriche or superfici cilindriche is common when emphasizing shape rather than function.

See also: cilindro, cilindrico, forme cilindriche. Note that cilindriche always agrees with feminine plural nouns; masculine forms would be cilindrici, and feminine singular would be cilindrica.