名詞 floc:

1. a small loosely aggregated mass of flocculent material suspended in or precipitated from a liquid
   同義詞：floccule

floc

n.（名詞）
A flocculent mass formed in a fluid through precipitation or aggregation of suspended particles.
絮凝物：在流體中由于懸浮顆粒的沉淀或聚集而成的絮凝塊

來源：
Short for flocculus
flocculus的簡寫