noun-modifying (irregular)
medical, dental and pharmacological
Prenominal modifier used in academic and administrative contexts, typically for university faculties, departments, or integrated healthcare fields.
The Faculty of Medical, Dental and Pharmaceutical Sciences provides integrated education in medicine, dentistry, and pharmacy.
Medical, dental, and pharmaceutical research institutions collaborated to develop a new drug.
歯学 is dentistry alone; 医歯薬 includes dentistry as one of its three components.
薬学 is pharmaceutical sciences alone; 医歯薬 includes pharmacology as one of its three components.
medicine, dentistry and pharmacology (as a combined field of study)
Compound of 医 (medicine), 歯 (dentistry), and 薬 (pharmacology). The reading いしやく follows standard on'yomi for each character.