Lewis Short
rheumătismus (noun M) = ῥευματισμὀς,:
* Rheum, catarrh (pure Lat. fluctio): levis humoris fluor quem Graeci rheumatismum vocant,Cael. Aur. Acut. 2, 27, 146; Plin. 22, 18, 21, § 46; 23, 2, 32, § 66; 24, 3, 3, § 7 et saep.
Charlton T. Lewis, Charles Short, A Latin Dictionary