Ephemera

e-fem'e-ra, n. (Med.) A fever of one day's continuance only. (Entom.) The day-fly, or May-fly; strictly, a fly that lives one day only, applied also to short-lived insects. [Gr., epi and hemera, a day.] — Ephem'eral, n. Anything which lasts but a day or a very short time. — Ephem'eral, -eric, -erous, -rus, a. Beginning and ending in a day; diurnal existing for a short time only. — Ephem"- eris, n. pi. Ephemerides, -mer'Y-dez. A journal; diary. (Astron.) An astronomical almanac; a tabular statement of the a igned places of a planet, comet, etc., on succe ive days. [Gr., a diary.]