Word Explorer

Diurnal

/daɪˈɜːnəɫ/

A flower that opens only in the day.

📖 Definitions of "Diurnal"

noun

1
A flower that opens only in the day.
2
A book containing canonical offices performed during the day, hence not matins.
3
A diary or journal.
4
A daily news publication.

adjective

1
Happening or occurring during daylight, or primarily active during that time.
"Most birds are diurnal."
2
Said of a flower open, or releasing its perfume during daylight hours, but not at night.
3
Having a daily cycle that is completed every 24 hours, usually referring to tasks, processes, tides, or sunrise to sunset; circadian.
4
Done once every day; daily, quotidian.

2 synonyms found via WordNet and Google Books.

Word	Definition
cyclicalnoun	recurring at regular intervals
cyclicnoun	Characterized by, or moving in cycles, or happening at regular intervals; cyclical

Words with the opposite meaning.

Word	Definition
nocturnalnoun	(of a person, creature, group, or species) Primarily active during the night.

Found via reverse dictionary — words that share a conceptual meaning.

Word	Definition
cyclic	Characterized by, or moving in cycles, or happening at regular intervals; cyclical
cyclical	recurring at regular intervals
daytimenoun	The time of daylight; the time between sunrise and sunset.
daynoun	A period of time equal or almost equal to a full day-night cycle, being 24 hours long.
daily	That occurs every day, or at least every working day.
diel	(biology) Having a 24-hour period regardless of day or night.
running	Moving or advancing at a run.
daylightnoun	The natural light that is ambient in daytime, being mostly sunlight (both direct and indirect, on either sunny days or cloudy days).
daylong	Throughout the day.
daylit	—
sunlit	Illuminated by sunlight.
sunshiny	(figurative) Cheerful; happy; pleasant.
circadian	(biology) Of, relating to, or showing rhythmic behaviour with a period of approximately 24 hours; especially of a biological process.
quotidiannoun	Happening every day; daily.
everydaynoun	Appropriate for ordinary use, rather than for special occasions.
routinenoun	A course of action to be followed regularly; a standard procedure.
regularnoun	(chiefly US) Having the expected characteristics or appearances; normal, ordinary, standard.
recurrent	Recurring; happening time after time.
periodic	Occurring at regular intervals.
solarnoun	Of or pertaining to the sun; proceeding from the sun.