RHEUM, noun [Gr. from to flow.] 1. An increased and often inflammatory action of the vessels of an organ; but generally applied to the inflammatory action of the mucous glands, attended with increased discharge and an altered state of their excreted fluids. 2. A thin serous fluid, secreted by the mucous glands, etc.; as in catarrh.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI