Ephemera ephelis • ephemera · · · Info · Definitions · Synonyms · Characters · · Ephemera · · Text Latin · · Script 8 · · Length Definitions · · · (noun) something transitory; lasting a day. Synonyms: ephemera. · · Noun Definition 1 (noun) anything short-lived, as an insect that lives only for a day in its winged form. Synonyms: ephemeron, ephemeral. · · Noun Definition 1 Synonyms · · · ephemeron · · Synonym 1 ephemeral · · Synonym 2 Characters · · E latin capital letter e U+0045 a latin small letter a U+0061 e latin small letter e U+0065 h latin small letter h U+0068 m latin small letter m U+006D p latin small letter p U+0070 r latin small letter r U+0072