acromioclavicular

adjective
acro·​mio·​cla·​vic·​u·​lar | \ ə-ˌkrō-mē-(ˌ)ō-klə-ˈvik-yə-lər How to pronounce acromioclavicular (audio) \

Medical Definition of acromioclavicular

: relating to, being, or affecting the joint connecting the acromion and the clavicle acromioclavicular arthritis