agglomeration

Plural: agglomerations

Noun

• a jumbled collection or mass
• the act of collecting in a mass; the act of agglomerating
• The act or process of collecting in a mass; a heaping together.
• State of being collected in a mass; a mass; cluster.
• An extended city area comprising the built-up area of a central city and any suburbs linked by continuous urban area.
• A mass of large volcanic fragments bonded under heat.