Coarse may refer to: * Bosnian Coarse-Haired Hound, developed by 19th century Bosnian hunters as a scent hound. * Coarse (behavior), vulgar behavior *

Coarse bubble diffusers Coarse bubble diffusers are a pollution control technology used to aerate and or mix wastewater for sewage treatment. Description Coarse bubble diffusers produce 1/4 to 1/2 inch (6.4 to 13 mm) bubbles which rise rapidly from the floor ...

, produce 1/4 to 1/2 inch bubbles which rise rapidly from the floor of a wastewater treatment plant or sewage treatment plant tank. *

Coarse fishing In Britain and Ireland, coarse fishing (, ) refers to angling for rough fish, which are fish species traditionally considered undesirable as a food or game fish. Freshwater game fish are all salmonids — most particularly salmon, trout and ch ...

, an angling method, mostly popular throughout Europe. * Coarse sandpaper, a form of paper where an abrasive material has been fixed to its surface, allowing rapid removal of material by rubbing. *

Coarse structure In the mathematical fields of geometry and topology, a coarse structure on a set ''X'' is a collection of subsets of the cartesian product ''X'' × ''X'' with certain properties which allow the ''large-scale structure'' of metric spaces and topologi ...

, on a set X is a collection of subsets of the cartesian product X × X with certain. properties which allow the large-scale structure of metric spaces and topological spaces to be defined. Used in the mathematical fields of geometry and topology. *

Coarse woody debris Coarse woody debris (CWD) or coarse woody habitat (CWH) refers to fallen dead trees and the remains of large branches on the ground in forests and in rivers or wetlands.Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). C ...

(CWD), a term used for the dead trees left standing or fallen, including branches on the ground. * Styrian Coarse Haired Hound, a rough coated, hardy hunting dog used by Austrians and Slovenians to hunt Wild Boar. *

Granularity Granularity (also called graininess), the condition of existing in granules or grains, refers to the extent to which a material or system is composed of distinguishable pieces. It can either refer to the extent to which a larger entity is sub ...

*''Coarse books'', a British series of humorous books on sports and pursuits by Michael Green or Spike Hughes, e.g.

The Art of Coarse Rugby Michael Green (born 2 January 1927 in Leicester, England, died 25 February 2018) was a British journalist and author of humorous books. He is best known for ''The Art of Coarse Rugby'', ''The Art of Coarse Acting'' and other books with similar ...

*''Coarse model'', a computationally fast, auxiliary

model A model is an informative representation of an object, person or system. The term originally denoted the plans of a building in late 16th-century English, and derived via French and Italian ultimately from Latin ''modulus'', a measure. Models c ...

paired with a ''fine model'' in engineering modeling and optimization by

space mapping The space mapping methodology for modeling and design optimization of engineering systems was first discovered by John Bandler in 1993. It uses relevant existing knowledge to speed up model generation and design optimization of a system. The kno ...

See also