IPA: /ɪˌfɛm.əˈræl.ɪ.ti/
KK: /ɪˌfɛm.əˈræl.ɪ.ti/
The quality or state of lasting for a very short time; something that is temporary or fleeting.
The ephemerality of the flowers made them even more beautiful, as they bloomed for only a few days.
Ephemerality is formed from "ephemeros" (Greek, meaning lasting a day) and the suffix "-ity" (meaning the state or quality of). The word describes the quality of being short-lived or transient, as something that lasts only for a day.
Think of something that lasts just for a day ('ephemeros') — that's why ephemerality refers to the state of being short-lived.