1.
long period of time; extended duration
A prolonged stretch of time, typically weeks, months, or years.
長期間留守にする。
To be away for a long period.
長期間にわたる交渉が続いた。
Negotiations continued over an extended period.
この薬を長期間服用すると副作用が出ることがある。
Taking this medicine for a long period may cause side effects.
長 (long) + 期間 (period of time). Describes a stretch of time that is notably longer than usual, typically ranging from several weeks to years.
COMMON COLLOCATIONS:
- 長期間にわたる — over a long period
- 長期間放置する — leave unattended for a long time
- 長期間保存する — store for a long period
- 長期間滞在する — stay for an extended period
SIMILAR WORDS:
- 長期 — long-term; focuses on the nature of something rather than the duration itself
- 長い間 — for a long time; more colloquial and conversational
- 長年 — many years; specifically implies years rather than a general long period