How to say "dome" in Japanese

• ドームCommon
  nounThe everyday katakana word for a dome as a rounded roof, ceiling, or domed structure; for the ordinary architectural sense of 'dome' this common word is the default choice.
  東京ドームとうきょうどーむへ行いったことがありますか？↗

  Have you ever been to the Tokyo Dome?
• どたま
  nounNot an architectural dome: this is derogatory slang for a person's head, like English 'bean' or 'nob'; its 'dome' sense is that slang one, and it is usually written in kana alone.
• 丸屋根まるやね
  nounLiterally 'round roof': a descriptive word for a dome as the rounded roof of a building, also covering vaulted roofs and cupolas; less common than ドーム and focused on the roof itself.
• 円頂えんちょう
  nounWritten with characters meaning 'round top', this less common word names a dome or cupola — the rounded crown of a building; a more literal-sounding alternative to ドーム.
• 庇面ひめん
  nounA marginal choice: this less common word is seldom the one you want for 'dome'; its characters suggest an overhanging, sheltering surface, and for actual domes ドーム or 丸屋根 serve far better.

For the ordinary architectural sense, 「ドーム」 is the common default; 丸屋根 and 円頂 are less common words for a domed roof or cupola; 「どたま」 is derogatory slang for a head, and 庇面 is a marginal option.

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

• ドームdome
• どたまhead
• 丸屋根まるやねdome
• 円頂えんちょうdome
• 庇面ひめんdome
• 天蓋てんがいcanopy
• 円蓋えんがいcupola
• 穹窿きゅうりゅうdome