Translation guide
A dormer window is a window that projects vertically from a sloping roof. In Japanese, it is most commonly referred to as ドーマー窓 (dōmā mado), a loanword from English. Architectural contexts may use more specific terms.
The most common way to refer to a dormer window in everyday Japanese, understood by most people.
The standard loanword for 'dormer window'. Widely used in housing and architectural contexts.
この家にはドーマー窓が二つあります。
This house has two dormer windows.
Used in architectural drawings, building codes, or professional discussions.
Shortened form of ドーマー窓, common in technical contexts.
A native Japanese compound meaning 'roof window'. Less common than ドーマー窓 but still understood.
屋根窓から光が差し込んでいる。
Light is coming in through the dormer window.
We will add a dormer in this design.
Literally 'sky window', but can sometimes refer to a dormer window in architectural contexts. More commonly means 'skylight'.
天窓 usually means a skylight (a window in a flat or low-slope roof), not a dormer. Use only when the context clearly indicates a dormer.
天窓を設置して屋根裏を明るくした。
We installed a dormer window to brighten the attic.