| GlossaryHeading | GlossaryDetails |
| Weather | The state of the atmosphere at a given time, as defined by the various meteorological parameters. |
| Wheezing | Breathe with a high pitched whistling or rattling sound in the chest, as a result of obstruction in the air passages. |
| Wind direction | Wind direction is the direction from which it originates. For example, a northerly wind blows from the north to the south. Wind direction is usually reported in cardinal directions or in azimuth degrees |
| Wind rose | A wind rose is a circular display of how wind speed and direction are distributed at a given location for a certain time period. |
| World Bank | The World Bank is a United Nations international financial institution that provides loans to developing countries for capital programs. The World Bank is a component of the World Bank Group, and a member of the United Nations Development Group. |
| World Health Organization (WHO) | It is a specialized agency of the United Nations (UN) that is concerned with international public health. It was established on 7 April 1948, headquartered in Geneva, Switzerland. |
| World Resource Institute (WRI) | It is a non-governmental global research organization which seeks to create equity and prosperity through sustainable natural resource management. The efforts of the WRI are focused on six key areas—climate, clean energy, food, forests, water, and cities and transportation. |