flocc

Noun

floc (countable and uncountable, plural flocs)

1. A floccule; a soft or fluffy particle suspended in a liquid, or the fluffy mass of suspended particles so formed.
   • It might seem that Mr. Holl, whose initial sketches are glorious watercolors, was an unlikely candidate for a job that is all about hydrodynamics. But he credits much of his inspiration to repeated meetings with engineers -- as many as 30 at a time -- to discuss topics like "flocculation" (the...2005 February 27, Fred A. Bernstein, “In My Backyard, Please: The Infrastructure Beautiful Movement”, in The New York Times
2. (informal) A flocculant, as used in swimming pools to make particles clump together so they are trapped by the filter.
   • This can happen for a few reasons, such as adding too much floc or adding too much algaecide prior to floccing.2023, Kristine Blanchard, Pool Care For Dummies, page 291

See all 3 meanings of floc