diurnal

• POS: Adjective, Noun
• HYPHEN: di=ur=nal

OXFORD DICTIONARY

diurnal, adj.
1 of or during the day; not nocturnal.
2 daily; of each day.
3 Astron. occupying one day.
4 Zool. (of animals) active in the daytime.
5 Bot. (of plants) open only during the day.

Derivative

diurnally adv.

Etymology

ME f. LL diurnalis f. L diurnus f. dies day

THESAURUS

diurnal

annual, biannual, biennial, bimonthly, biweekly, catamenial, centenary, centennial, circadian, daily, daytime, decennial, everyday, fortnightly, hebdomadal, hourly, menstrual, momentary, momently, monthly, quarterly, quotidian, regular, secular, semestral, semiannual, semimonthly, semiweekly, semiyearly, tertian, triennial, weekly, yearly

ROGET THESAURUS

diurnal

Periodicity

N regularity of recurrence, periodicity, intermittence, beat, oscillation, pulse, pulsation, rhythm, alternation, alternateness, alternativeness, alternity, bout, round, revolution, rotation, turn, say, anniversary, jubilee, centenary, catamenia, courses, menses, menstrual flux, rota, cycle, period, stated time, routine, days of the week, Sunday, Monday, months of the year, January, feast, fast, Christmas, Easter, New Year's day, Allhallows, Allhallowmas, All Saints' Day, All Souls', All Souls' Day, Ash Wednesday, bicentennial, birthday, bissextile, Candlemas, Dewali, groundhog day, Halloween, Hallowmas, Lady day, leap year, Midsummer day, Muharram, woodchuck day, St. Swithin's day, natal day, yearbook, yuletide, punctuality, regularity, steadiness, periodic, periodical, serial, recurrent, cyclical, rhythmical, recurring, intermittent, remittent, alternate, every other, hourly, diurnal, daily, quotidian, tertian, weekly, hebdomadal, hebdomadary, biweekly, fortnightly, bimonthly, catamenial, monthly, menstrual, yearly, annual, biennial, triennial, centennial, secular, paschal, lenten, regular, steady, punctual, regular as clockwork, periodically, at regular intervals, at stated times, at fixed established, at established periods, punctually, de die in diem, from day to day, day by day, by turns, in turn, in rotation, alternately, every other day, off and on, ride and tie, round and round.