A medical specialty concerned with the provision of continuing, comprehensive primary health care for the entire family.
A branch of medicine which deals with sexually transmitted disease.
A branch of engineering concerned with the design, construction, and maintenance of environmental facilities conducive to public health, such as water supply and waste disposal.
Means or process of supplying water (as for a community) usually including reservoirs, tunnels, and pipelines and often the watershed from which the water is ultimately drawn. (Webster, 3d ed)