diagnostic

mastery
UK /daɪ.əɡˈnɒs.tɪk/ US /ˌdaɪ.əɡˈnɑ.stɪk/adjnoun

card 1 of 7 · context meaning

In this sentence, what does 'diagnostic of' mean?

The doctor explained that severe joint pain and swelling are diagnostic of rheumatoid arthritis.