noun
colloidal particle
Technical term used in chemistry and materials science for particles dispersed in a colloid.
コロイド粒子は溶液中でブラウン運動を示す。
Colloidal particles exhibit Brownian motion in a solution.
コロイド refers to the colloid as a whole, while コロイド粒子 specifically denotes the individual particles within it.
Compound of コロイド (from English 'colloid') and 粒子 (particle).