This is the 8629th most frequent Russian word.
основную
"Main" or "primary."
Describes 'main' as a key or central aspect of the topic.
Я изучаю основную тему нашей лекции.
I am studying the main topic of our lecture.
Refers to 'basic or primary' information that is most important.
Основную информацию можно найти в учебнике.
The main information can be found in the textbook.
Indicates 'principle or fundamental' task central to the lesson.