This is the 9786th most frequent Polish word.
zlecona
"Zlecona" means "commissioned" or "assigned."
Here the word 'zlecona' is used as a past participle adjective describing 'work' (praca) that has been assigned.
Zlecona praca została wykonana na czas.
The assigned work was completed on time.
The word 'zlecona' in its plural form 'zleconych' modifies 'projektów' (projects) to indicate they are commissioned or assigned.
Ta firma ma wiele zleconych projektów.
This company has many commissioned projects.
The word 'zlecona' used in its plural form 'zleconych' refers to 'usług' (services) in a legal or formal context, signifying that they are assigned via the contract.