from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A flocculent mass formed in a fluid through precipitation or aggregation of suspended particles.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An alternative word for floccule. A soft or fluffy particle suspended in a liquid or the fluffy mass of suspended particles so formed. Floc may be mineral as for clay, chemical as in water treatment or biological as in sewage treatment.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a small loosely aggregated mass of flocculent material suspended in or precipitated from a liquid


Short for flocculus.
(American Heritage® Dictionary of the English Language, Fourth Edition)


  • LIME: Helps "floc" formation; lessens pipe corrosion

    The Nation's River A report on the Potomac from the U.S. Department of the Interior

  • ALUM: Forms "floc" (snowflakes) to trap impurities

    The Nation's River A report on the Potomac from the U.S. Department of the Interior

  • The 'floc' forms as a result of the coagulants added during the previous stage and serves to combine the colloids into larger masses. - Latest News

  • To achieve this, coagulation processes involve the addition of a chemical salt to electrically charge small water borne particles (known as 'colloidal matter') so that they attract and bind to each other to make larger particles, termed as 'floc', which can then float or settle. - Latest News

  • In the livers of sick sheep were lodged parasites in the shape of leaves, called flukes after their resemblance to flounder floc in Anglo-Saxon.

    Parasite Rex

  • These included white and red floc lightly fortified, chilled aperitifs, some unidentified red liqueur derived from cognac, red and white table wines, and a dessert-accompanying concoction made by pouring an unaged, 40-percent-alcohol Armagnac into a saucepan, dumping in a handful of sugar cubes and setting the liquid ablaze until the alcohol burned off, which took about 15 minutes.

    The Foie Gras Wars

  • The efficiency of floc formations is contingent on the frequency of particle-to-particle contact.

    3. Technologies

  • Expt. Carbon source Inoculum size g/l Biomass (after 20 hr) g/l 1 Solka-floc 1.5 9,0 2 Bagasse 1.2 8.0 3

    Chapter 22

  • A series of experiments on the continuous cultivation of Aspergillus terreus were conducted using treated solka-floc as the carbon source.

    Chapter 22

  • Continuous cultivation of Aspergillus terreus on treated solka-floc with more than 80 per cent utilization of cellulose indicates that SCP production from cellulose is economically feasible on a commercial scale.

    Chapter 22


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  • See citation on alum.

    April 24, 2013