ephemeral
意味
- (昆虫・草などが)1日限りの
- 短命の,はかない,つかの間の
語源
英語の原文（Wiktionary）
From New Latin ephemerus, from Ancient Greek ἐφήμερος (ephḗmeros), the more common form of ἐφημέριος (ephēmérios, “of, for, or during the day, living or lasting but for a day, short-lived, temporary”), from ἐπί (epí, “on”) + ἡμέρα (hēméra, “day”).