Glossary
At the end of each definition in this Glossary there is a number in brackets. This indicates the number of the Study Session where the term is first used in this OpenWASH module.
Special | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | ALL
D
defluoridationremoval of excess fluoride from water (5) | |
diffuse pollutionpollution from non-point sources (4) | |
diffusionprocess by which something moves
naturally from a region of high concentration to one of low concentration (11) | |
disease outbreakunexpected rise in the number of
cases of a disease (14) | |
disinfectionelimination of micro-organisms that
can cause disease (5) | |
distribution mainspipes that take water from a service
reservoir to other areas for use (1) | |
drinking water laddersteps in improvement of quality of
water supply (3) | |
drinking water standardsset of limits for the amounts of
specified substances in drinking water (9) | |
drip-feed irrigationform of irrigation where water is put
at the base of a plant, using narrow pipes (1) | |
droughtlack of rain that lasts for a long
period of time (14) | |