Definition of
diurnal has definitions from the field of biology
1
[ adjective ] (biology) belonging to or active during the day

Examples

"diurnal animals are active during the day" "diurnal flowers are open during the day and closed at night"

Related terms

nocturnal biology daytime

2
[ adjective ] having a daily cycle or occurring every day

Examples

"diurnal rhythms" "diurnal rotation of the heavens" "the diurnal slumber of bats"

Related terms

cyclic

*

Rhymes with

nocturnal fraternal paternal maternal eternal dental colonel kernel vernal journal eternal occidental accidental environmental fundamental internal developmental semifinal darnel anal external sentimental experimental supplemental incremental continental detrimental elemental monumental instrumental infernal experimental cardinal duodenal transcendental latitudinal longitudinal tribunal judgmental terminal kennel phenol fennel cantonal interpersonal impersonal sentinel communal duodenal departmental periodontal gentle null additional traditional untraditional additional nontraditional abdominal medicinal conditional unconditional oriental luminal virginal conventional monoclonal unintentional dimensional adrenal intentional consonantal unconventional national intestinal gastrointestinal annul transcontinental experimental autumnal octagonal criminal dysfunctional cardinal polygonal phenomenal hexagonal parnell functional vaginal retinal exceptional constitutional doctrinal juvenile delusional unconstitutional institutional optional penal tunnel panel tonal spinal carnal cornel seminal arsenal seasonal nominal occasional emotional occupational obsessional nutritional transitional divisional directional transnational unprofessional diagonal nonprofessional navigational sectional denominational national correctional conversational motivational multinational rotational connotational congregational confrontational educational congressional representational computational compositional marginal coeducational regional relational unemotional rational devotional jurisdictional recreational supranational irrational invitational proportional provisional international professional instructional processional promotional inspirational vocational hormonal aboriginal generational gravitational original confessional shrapnel fractional organizational fictional sensational operational venal renal vinyl final funnel atonal channel chunnel semifinal dismantle semifinal flannel hymnal empanel impanel bushnell signal subliminal directional

Phonetic and Homophones

D AY0 ER1 N AH0 L

To share this definition click "text" (Facebook, Twitter) or "link" (blog, mail) then paste
text link