diurnal

• Относящийся ко дню или происходящий в течение дня; активный в дневное время.

Relating to or occurring during the day; active in the daytime.

1. Active during the dayC1formalscientific

   Describing animals or plants that are active or function primarily during the daytime.

   Дневной

   • Most birds are diurnal, hunting and feeding during daylight hours.
   • Diurnal animals have adapted to the sun's cycle for survival.
   • The diurnal habits of the species make it easier to observe in the wild.

   Synonymsdaytime

   Antonymsnocturnal

2. Daily cycleC1formalscientific

   Relating to or occurring in a day; each day.

   Суточный

   • The diurnal rotation of the Earth causes day and night.
   • Diurnal temperature variations are more extreme in deserts.
   • The study focused on diurnal patterns of human activity.

   Synonymsdailyeverydayquotidian