rheumatoid factor n.
Any of the immunoglobulins found in the serum of individuals with rheumatoid arthritis that enhance the agglutination of suspended particles that are coated with pooled human gamma globulin and that are used to diagnose the disease.
|a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.|