How to say "duct" in Japanese

• ダクトCommon
  nounThe everyday word for a duct as a physical structure, especially one carrying air in ventilation or air-conditioning; this is the word you want in most cases.
• 導管どうかん
  nounA less common word for a pipe or conduit that conducts a fluid or other material; it covers 'duct' in technical contexts, though ダクト is the common everyday word.
• 流路りゅうろ
  nounReally means the channel or path along which water or another fluid flows; it corresponds to 'duct' only in that passage sense, not to a physical duct.
• 輸送管ゆそうかん
  nounReally means a pipe or pipeline for transporting material; 'duct' is only a loose gloss, and this is seldom the word you want for an ordinary duct.

For a physical duct, especially one carrying air, 「ダクト」 is the common word; 導管 is a technical word for a conducting pipe; 流路 means a flow channel; 輸送管 really means 'pipeline'.

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

• ダクトduct
• 導管どうかんconduit
• 流路りゅうろchannel
• 輸送管ゆそうかんtransport pipe
• 管かんvessel