This is the 457th most frequent Estonian word.
leidnud
"Leidnud" means "found" in English.
In this sentence, the word "leidnud" is the past participle of the verb "leidma," and it is used in the present perfect tense to indicate an action completed in the past that has relevance to the present.
Ma olen leidnud lahenduse sellele probleemile.
I have found a solution to this problem.
Here, "leidnud" is again the past participle, used in a question to ask about the completion of an action with present importance.
Kas sa oled juba oma võtmed leidnud?
Have you already found your keys?
In this sentence, the word "leidnud" functions in a subjunctive mood context, conveying a hypothetical past action.