adjective (used of e.g. coatings) protecting against accumulation of barnacles etc on underwater surfaces; `antifouling paint`; `antifouling chemicals` Found on https://www.encyclo.co.uk/local/20974
(of a coating, process, or the like) preventing the accumulation of barnacles, algae, etc., on underwater surfaces: The makers now use an antifouling chemical on all marine hulls. Found on https://www.infoplease.com/dictionary/antifouling