This is the 4582nd most frequent Catalan word.
periodística
"Periodística" in Catalan means "journalistic" in English.
The word "periodístic" here is used to describe an article that is related to journalism.
Vaig llegir un article periodístic molt interessant sobre ciència.
I read a very interesting journalistic article about science.
In this sentence, "periodística" serves as an adjective characterizing an investigation conducted in the field of journalism.
La investigació periodística va revelar nous aspectes del cas policial.
The journalistic investigation revealed new aspects of the police case.
Here, "periodístiques" is used to describe skills that pertain to the field of journalism.