adj. 25B6; adjective (poetic/literary) VANISHING, fading, evaporating, melting away, disappearing; ephemeral, fleeting, short-lived, short-term, transitory, transient, fugitive, temporary.
permanent.
EVANESCENT
Meaning of EVANESCENT in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012