1.
front line, forefront, cutting edge
The most forward position in a conflict, or figuratively, the leading edge of a field, industry, or area of activity. Used both in military and metaphorical contexts.
研究の最前線に立つ。
To stand at the forefront of research.
医療の最前線で働く医師たちに感謝する。
I'm grateful to the doctors working on the front lines of medicine.
この会社はAI技術の最前線で世界をリードしている。
This company leads the world at the cutting edge of AI technology.
USAGE:
最前線 is used both literally (military front lines) and figuratively (the forefront of a field or effort). The figurative usage is more common in everyday Japanese.
COMMON COLLOCATIONS:
- 最前線に立つ: to stand at the forefront
- 最前線で働く: to work on the front lines
- 最前線で活躍する: to be active at the forefront
- 技術の最前線: the cutting edge of technology
- 現場の最前線: the front lines of the field
ETYMOLOGY:
最 (most) + 前線 (front line) — the very foremost line.