ロイマチスロイマチスMeanings1nounrheumatismmedicineArchaic medical term borrowed from German Rheumatismus. In modern Japanese, リウマチ is the standard word.from German RheumatismusSee also: リウマチ昔むかしの医い学がく書しょには「ロイマチス」という表ひょう記きが見みられる。In old medical books, the notation 'ロイマチス' can be seen.