集しゅう塊かい

noun

agglomerate; aggregation; mass; cluster

Technical term used in science and engineering for a clustered mass of particles, cells, molecules, or similar units. Often appears in compound nouns such as 集塊岩 (agglomerate rock) or 集塊構造 (agglomerate structure).

• この岩がん石せきは火か山ざん由ゆ来らいの集しゅう塊かいである。

  This rock is a volcanic agglomerate.

• 細さい胞ぼうが集しゅう塊かいを形けい成せいする様よう子すを観かん察さつした。

  We observed how the cells form aggregates.