elaborados

In a sentence

• Los planes estaban elaborados con gran detalle.

  The plans were elaborated with great detail.

  In this sentence, 'elaborados' is used as a past participle functioning as an adjective, describing 'planes' to indicate they were created or prepared with detail.

• Compramos unos productos elaborados artesanalmente.

  We bought some handcrafted products.

  Here, 'elaborados' is again a past participle used as an adjective, describing 'productos' to indicate that they were crafted manually.

• Sus argumentos fueron cuidadosamente elaborados antes de la reunión.

  Her arguments were carefully prepared before the meeting.

  'Elaborados' in this sentence is part of the passive voice construction, referring to 'argumentos' and indicating they were prepared or developed thoroughly.