This is the 14159th most frequent Russian word.
определят
"Определят" means "they will determine" or "they will define."
Here, 'определят' is used in the context of deciding or setting plans.
Комитет определят планы на следующую неделю.
The committee will determine the plans for the next week.
Here, 'определят' is used to mean examining conditions to make a selection.
Эти критерии определят, кто будет выбран для участия.
These criteria will determine who will be selected for participation.
Here, 'определят' is used to describe shaping or defining the future.