1.
crowding, dense concentration, clustering
A state where people, buildings, or objects are packed closely together in a limited area. Used both as a noun and as a suru verb.
住宅が密集している。
Houses are densely packed together.
密集した地域では火事が広がりやすい。
Fires spread easily in densely packed areas.
人口が密集している都市では、交通渋滞が深刻だ。
In cities with dense populations, traffic congestion is a serious problem.
USAGE:
密集 is typically used with する as a verb. The past participle 密集した functions as a modifier meaning "densely packed" or "concentrated."
COLLOCATIONS:
- 住宅密集地 — densely built residential area
- 人口が密集する — population is densely concentrated
- 密集した地域 — densely packed area
SIMILAR WORDS:
密 refers to closeness or density in general and became widely known during COVID-19 (三密). 過密 means overcrowded and implies excessive density.