This is the 879th most frequent Catalan word.
tractat
"Tractat" in Catalan means "treaty" or "treatise" in English.
In this context, 'tractat' refers to a formal agreement or treaty between parties, particularly between nations to cease hostilities.
El tractat de pau es va signar el 1713.
The peace treaty was signed in 1713.
In this sentence, 'tractat' comes from the verb 'tractar', meaning to treat or deal with in a certain manner.
Ell sempre ha tractat bé als seus companys de feina.
He has always treated his work colleagues well.
Here, 'tractat' is used to mean a written work dealing formally and systematically with a subject.