| mdf | medium density fibreboard (mdf) is made from compressed pieces of wood stuck together with adhesive. it is often used to make furniture however the glues used off-gas fumes and care must be taken not to breathe in the dust when working with mdf |
| methane (ch4) | a colourless, odourless gas formed when organic matter anaerobically decomposes. methane is about 20 times more potent than carbon dioxide as a greenhouse gas. major sources include fermentation in ruminant animals, decay of organic material and landfill. |
| micro chp | micro chp is an emerging technology, which enables the benefits of combined heat and power to be made available on a much smaller, domestic scale than traditional chp plants. it involves the replacement of a traditional boiler with a gas fired micro chp generator, which can provide a house with all its heating needs, and significant proportion of its electricity needs. |
| microgeneration | the generation of zero or low-carbon heat and power by individuals, small businesses and communities to meet their own needs; technologies include small scale wind turbines, water turbines, ground source heat pumps, solar collectors, solar electricity and micro combined heat and power installations |
| mixed use development | a development in one or several buildings that combines several revenue producing uses that are integrated into a comprehensive plan, such as a project with a elements of housing, retail, and office space. |