- (a.) Beginning and ending in a day; existing only or no longer than, a day; diurnal; as, an ephemeral flower.
- (n.) Anything lasting but a day or a brief time; an ephemeral plant, insect, etc.
- (a.) Short-lived; existing or continuing for a short time only.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). ephemeral. Retrieved September 21, 2026, from http://smartdefine.org/ephemeral/definitions/2004030 |
| Chicago | Webster's. 2011. "ephemeral" http://smartdefine.org/ephemeral/definitions/2004030 (accessed September 21, 2026). |
| Harvard | Webster's 2011, ephemeral, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/ephemeral/definitions/2004030>. |
| MLA | Webster's. "ephemeral" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/ephemeral/definitions/2004030> |