di·ur·nal 
(dī-ûrnəl)
(dī-ûrnəl)adj.
1. Relating to or occurring in a 24-hour period; daily.
2. Occurring or active during the daytime rather than at night: diurnal animals.
3. Botany Opening during daylight hours and closing at night.
n.
1. A book containing all the offices for the daily canonical hours of prayer except matins.
2. Archaic
a. A diary or journal.
b. A daily newspaper.
[Middle English, from Late Latin diurnālis, from Latin diurnus, from diēs, day; see dyeu- in the Appendix of Indo-European roots.]
di·urnal·ly adv.
- Indo-European root: leu-
- Indo-European root: leubh-
- Indo-European root: leudh-
- Indo-European root: leugh-
- Indo-European root: leuk-
- Indo-European root: leu(ə)-
- Indo-European root: lē-
- Indo-European root: līk-
- Indo-European root: lī̆no-
- Indo-European root: lūs-
- Indo-European root: mag-
- Indo-European root: magh-
- Indo-European root: maghu-
- Indo-European root: man-
- Indo-European root: man-
- Indo-European root: marko-
- Indo-European root: me-
- Indo-European root: me-
- Indo-European root: med-
- Indo-European root: medhu-
- Indo-European root: medhyo-
- Indo-European root: meg-
- Indo-European root: mei-
- Indo-European root: mei-
- Indo-European root: meigh-