Ephemera (root: ephemeron)

• POS: Noun
• HYPHEN: e=phem=er=a

CIDE DICTIONARY

Ephemera, n. [NL., fr. Gr. a day fly, fr. daily, lasting but a day; over + day.].

•  A fever of one day's continuance only.  [1913 Webster]
•  A genus of insects including the day flies, or ephemeral flies. See Ephemeral fly, under Ephemeral.  [1913 Webster]

OXFORD DICTIONARY

Ephemera, n. (pl. ephemeras or ephemerae)
1 a an insect living only a day or a few days. b any insect of the order Ephemeroptera, e.g. the mayfly.
2 = EPHEMERON.

Ephemera, pl. of EPHEMERON 1.