who when • will · · · Info · Definitions · Characters · · who · · Text Latin · · Script 3 · · Length Definitions · · · (noun) a United Nations agency to coordinate international health activities and to help governments improve health services. Synonyms: World Health Organization, WHO. · · Noun Definition 1 Characters · · h latin small letter h U+0068 o latin small letter o U+006F w latin small letter w U+0077