EPHAH; EPHA
E"phah, or E"pha, n. Etym: [Heb.

Defn: A Hebrew dry measure, supposed to be equal to two pecks and five quarts. ten ephahs make one homer.

EPHEMERA
E*phem"e*ra, n. Etym: [NL., fr. Gr.

1. (Med.)

Defn: A fever of one day's continuance only.

2. (Zoöl.)

Defn: A genus of insects including the day flies, or ephemeral flies.
See Ephemeral fly, under Ephemeral.

EPHEMERAL
E*phem"er*al, a.

1. Beginning and ending in a day; existing only, or no longer than, a day; diurnal; as, an ephemeral flower.

2. Short-lived; existing or continuing for a short time only. "Ephemeral popularity." V. Knox. Sentences not of ephemeral, but of eternal, efficacy. Sir J. Stephen. Ephemeral fly (Zoöl.), one of a group of neuropterous insects, belonging to the genus Ephemera and many allied genera, which live in the adult or winged state only for a short time. The larvæ are aquatic; — called also day fly and May fly.