This is the 2450th most frequent Russian word.
полугодие
"Полугодие" means "half-year" or "a six-month period."
In this sentence, 'полугодие' refers specifically to the first half of an academic year, illustrating its use in an educational context.
Первое полугодие учебного года началось с увлекательных событий.
The first half-year of the academic year began with exciting events.
Here, 'полугодие' indicates a period of six months within which someone has completed their goals or tasks.
Он успешно завершил полугодие, выполняя все задания вовремя.
He successfully completed the half-year, finishing all tasks on time.
In this example, 'полугодие' is used in a temporal context to denote the latter half of a year.