This is the 2832nd most frequent Spanish word.
presidida
"Presidida" means "presided over" or "led."
Here, 'presidida' is used as a past participle of 'presidir', describing that the meeting was led or chaired by the director.
La reunión fue presidida por el director de la empresa.
The meeting was chaired by the company's director.
In this sentence, 'presidida' indicates that the expert was in a leading role, determining the discussion's direction.
La mesa redonda estuvo presidida por un experto en el tema.
The round table was presided over by an expert on the subject.
Here, 'presidida' describes the actions of presiding over or formally leading the ceremony.