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Webster 1913 Edition
Serein
‖
Se-rein′
,Noun.
 [F. Cf. ] 
Serenade
, Noun.
(Meteorol.) 
A mist, or very fine rain, which sometimes falls from a clear sky a few moments after sunset. 
Tyndall.
 Definition 2025
serein
serein
English
Noun
serein (uncountable)
-  Light rainfall from a cloudless sky after sunset.
-  2000, Raphael Confiant, Mamzelle Dragonfly
- "She must have caught a chill from the serein, that's all!"
 
 
-  2000, Raphael Confiant, Mamzelle Dragonfly
Synonyms
Anagrams
French
Pronunciation
Etymology 1
From Latin serēnus ("cloudless", by extension "calm, peaceful").
Adjective
serein m (feminine singular sereine, masculine plural sereins, feminine plural sereines)
Derived terms
Etymology 2
Either from Latin serenum (“good weather”), or from Old French serein (“evening”), from Latin serum.
Noun
serein m (plural sereins)