Agglomeration

Definitions

1. The act or process of collecting in a mass; a heaping together.
   countable, uncountable
2. State of being collected in a mass; a mass; cluster.
   countable, uncountable
3. An extended city area comprising the built-up area of a central city and any suburbs linked by continuous urban area.
   countable, uncountable
4. A mass of large volcanic fragments bonded under heat.
   countable, uncountable

Equivalents

CEFR level