EPHEMERAL
E*phem"er*al, n.
Defn: Anything lasting but a day, or a brief time; an ephemeral plant, insect, etc.
EPHEMERAN
E*phem"er*an, n. (Zoöl.)
Defn: One of the ephemeral flies.
EPHEMERIC
E*phem"e*ric, a.
Defn: Ephemeral.
EPHEMERIS
E*phem"e*ris, n.; pl. Ephemerides. Etym: [L., a diary, Gr. Ephemera.]
1. A diary; a journal. Johnson.
2. (Anat.) (a) A publication giving the computed places of the heavenly bodies for each day of the year, with other numerical data, for the use of the astronomer and navigator; an astronomical almanac; as, the "American Ephemeris and Nautical Almanac." (b) Any tabular statement of the assigned places of a heavenly body, as a planet or comet, on several successive days.
3. (Literature)