1di-ur-nal \d[0xF5]^--'ern-)el\ adj
[ME, fr. L diurnalis -- more at JOURNAL] (14c)
1a: recurring every day
1b: having a daily cycle
2a: of, relating to, or occurring in the daytime
2b: active chiefly in the daytime
2c: opening during the day and closing at night
-- di-ur-nal-ly \-)el-e^-\ adv
2diurnal n
(1600)
1 archaic: DIARY, DAYBOOK
2 archaic: JOURNAL