WORD ORIGIN noun a small Eurasian brown bat, Eptesicus serotinus. Origin of serotine 2 1765–75;
sērōtinus serotine 1
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for serotines adjective Also: serotinal ( sɪˈrɒtɪn), əl serotinous biology produced, flowering, or developing late in the season noun either of two insectivorous bats, Eptesicus serotinus or Vespertilio serotinus: family Vespertilionidae Word Origin for serotine
C16: from Latin
sērōtinus late, from sērus late; applied to the bats because they fly late in the evening
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Word Origin and History for serotines adj.
"late," 1590s, from French
sérotine, from Latin serotinus "that which comes late; that which happens in the evening," from sero, adverb of serus "late" (see soiree). Also as a noun, a type of small, brown bat, from 1771. Related: serotinous, in botany (1880) "appearing later in the season than usual."
Online Etymology Dictionary, © 2010 Douglas Harper