The definition of urban is relating to a city or of a city with a population of at least 50,000 people. An example of urban is the nature of Manhattan. urban. of or characteristic of the styles and culture of the inner city, esp. of the black inner city: urban music, fashions, etc. urban.
Renewable energy is generally defined as energy that comes from resources which are naturally replenished on a human timescale, such as sunlight, wind, rain, tides, waves, and geothermal heat.enewable energy resources exist over wide geographical areas, in contrast to other energy sources, which are concentrated in a limited number of countries.
uk â us â. âº NATURAL RESOURCES something such as oil, coal, or the sun, which can be used to provide power for light, heat, machines, etc.: alternative/renewable energy source We are committed to the development of clean and renewable energy sources. (Definition of âenergy sourceâ from the Cambridge Business English Dictionary Â© Cambridge University Press)