introducida

Introducida is the feminine singular past participle of the Spanish verb introducir. It functions as an adjective or as part of a passive-voice construction to indicate that something has been brought into a place, system, or context, or that an act of introduction has occurred. It agrees in gender and number with the noun it modifies, for example: la especie introducida, las ideas introducidas, una medida introducida.

Etymology and forms: Introducida derives from introducir, which in turn comes from Latin introducere (in + trahere). In Spanish, the related forms include introducido (masc. sing.), introducidos (masc. pl.), and introducidas (fem. pl.). The participle is commonly used with haber in perfect tenses (he introducido, has introducido) as well as in passive constructions with ser (la propuesta fue introducida).

Usage in biology and other domains: In ecology and biogeography, the phrase especie introducida refers to a species that has been brought by human activity to a region outside its native range. Introductions can be intentional or accidental and may have ecological consequences, ranging from neutral to invasive, depending on the species and context. Outside biology, introducida is used in general discourse to describe laws, ideas, procedures, or practices that have been brought into effect or consideration, such as una medida introducida o una idea introducida.

Grammar notes: As a past participle, introducida can function attributively or in a predicate position. In compound tenses, the feminine form appears when the subject is feminine. The masculine and plural forms are introducido, introducidos, and introducidas, respectively.

See also: introducir, introducción, especie introducida, participio pasado, voz pasiva.