Ephemera (from Gr. epi and hēmera, 'on a day'), or FEBRIS DIARIA in Latin, a fever which lasts only a single day, or part of a day, and is generally dependent on some slight local irritation. It hardly requires any other treatment than the removal of the cause, if known.
Ephemera
Chambers's Encyclopaedia, Volume 4: Dionysius to Friction, p. 394
Source scan(s): p. 0405