This is the 17560th most frequent Russian word.
тринадцати
The word "тринадцати" means "of thirteen" in English.
Тринадцати is used as a genitive case form of the numeral to indicate the age.
Ей всего тринадцати лет.
She is just thirteen years old.
Тринадцати is used in this idiomatic phrase highlighting superstition, functioning as a genitive numeral form referring to the group of cats.
Через путь пробежали тринадцати кошек.
Thirteen cats crossed the path.
Тринадцати is used in the genitive plural form as part of denoting the number of books in the list.