spektralna

Spektralna is a feminine singular adjective used in several South Slavic languages, including Croatian, Bosnian, and Serbian, to denote relation to a spectrum or to spectral analysis. The form comes from the root spektr- (from Latin spectrum) with the common Slavic suffix -alna; masculine and neuter counterparts are spektralan and spektralno, respectively.

In scientific and technical contexts, spektralna is applied to terms describing properties or measurements tied to a spectrum. Examples include spektralna analiza (spectral analysis), spektralna linija (spectral line), spektralna širina (spectral width), and spektralna distribucija (spectral distribution).

In astronomy, spektralna klasifikacija zvijezda refers to spectral classification of stars based on their light spectra. In optics and telecommunications, phrases such as spektralna filtracija or spektralna učinkovitost describe filtering by wavelength and spectral efficiency, respectively.

Across these languages, spektralna serves as a general term for anything related to spectra; in English the equivalent adjective is spectral.