膠こう原げん病びょうこうげんびょうMeanings1nouncollagen diseaseMedical term for a group of diseases involving connective tissue, such as rheumatoid arthritis and systemic lupus erythematosus.膠こう原げん病びょうは自じ己こ免めん疫えき疾しっ患かんの一いっ種しゅです。Collagen disease is a type of autoimmune disorder.