an agency that serves as the office of Surgeon General; includes agencies whose mission is to improve the public health
"The phs oversees initiatives designed to enhance community well-being and prevent disease across the nation."
plural of pH
"The phs of the three soil samples ranged from acidic to alkaline."
United States Public Health Service
"After graduating from medical school, she joined the phs to work on tropical disease eradication programs in remote islands."