How to say "daylight" in Japanese

• 昼光ちゅうこう
  nounCovers daylight in its literal sense: natural light from the sun and sky during the day. A less common word, found chiefly in technical fields such as architecture and lighting design.
• デイライト
  nounThe English loanword taken over as-is. It appears mainly in borrowed technical settings such as automotive lighting and photography, and is seldom the word you want for daylight in ordinary sentences.

For daylight as natural daytime light, 昼光 is the technical term used in fields like architecture and lighting, while 「デイライト」 is the English loanword, seen mainly in borrowed technical contexts such as car lighting and photography.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 昼光ちゅうこうdaylight
• デイライトdaylight
• 日ひ(the) day