Sheila LaBoof started this discussion 6 years ago#93,475
Definition of crepuscular
1 : of, relating to, or resembling twilight : dim crepuscular light the crepuscular sky
2 : occurring or active during twilight
crepuscular insects
crepuscular activity
crepuscular birds
History and Etymology for crepuscular
borrowed from New Latin crepusculāris, from Latin crepusculum, from presumed earlier *krepos- "twilight" (of obscure origin) + -culum, probably after dīlūculum "dawn, daybreak" (from dīlūcēre "to be clear" + -ulum, diminutive suffix)