大動脈(だいどうみゃく)

だいどうみゃく
noun
aorta; main artery, lifeline
body-internal
1. aorta
The main artery of the body, carrying oxygenated blood from the heart to the rest of the circulatory system.
大動脈(だいどうみゃく)から血液(けつえき)が送(おく)られる。
Blood is sent out from the aorta.
大動脈(だいどうみゃく)瘤(りゅう)は命(いのち)に関(かか)わる病気(びょうき)だ。
An aortic aneurysm is a life-threatening condition.
心臓(しんぞう)から出(で)た血液(けつえき)は大動脈(だいどうみゃく)を通(とお)って全身(ぜんしん)に届(とど)けられる。
Blood from the heart is delivered to the entire body through the aorta.
2. main artery, lifeline, vital route
Used figuratively for a crucial transportation route, supply line, or channel that sustains a region or system.
この道路(どうろ)は物流(ぶつりゅう)の大動脈(だいどうみゃく)だ。
This road is the main artery of logistics.
東海道新幹線(とうかいどうしんかんせん)は日本(にほん)の交通(こうつう)の大動脈(だいどうみゃく)と呼(よ)ばれている。
The Tokaido Shinkansen is called the main artery of Japan's transportation network.
地震(じしん)で交通(こうつう)の大動脈(だいどうみゃく)が寸断(すんだん)され、物資(ぶっし)の輸送(ゆそう)に大(おお)きな影響(えいきょう)が出(で)た。
The earthquake severed the main transportation artery, greatly affecting the transport of supplies.

Common patterns

大(だい) (large) + 動脈(どうみゃく) (artery). The anatomical term refers to the body's largest artery.

Usage

The figurative sense (sense 2) is very common in news and business contexts, where major highways, railways, and shipping routes are described as 大動脈(だいどうみゃく) of the economy or transportation system.

Common collocations

  • 大動脈(だいどうみゃく)瘤(りゅう): aortic aneurysm
  • 大動脈(だいどうみゃく)解離(かいり): aortic dissection
  • 交通(こうつう)の大動脈(だいどうみゃく): main transportation artery
  • 物流(ぶつりゅう)の大動脈(だいどうみゃく): logistics lifeline
general
Added 2026.2.21 14:45 · Revised 2026.9.2 13:01
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