daylength
English
Etymology
From
day
+
length
.
Noun
daylength
(
plural
daylengths
)
(
biology
)
period
of
daylight
;
photoperiod
Synonyms
day
,
photoperiod
; see also
Thesaurus:daytime
Antonyms
scotoperiod
; see also
Thesaurus:nighttime