circumnavigation
周航
解説 Definition
地球を一周する航海または航行。世界を一周して元の地点に戻ることを意味する。
Circumnavigation is the act of traveling all the way around something, especially the world. It is often used when talking about long sea voyages, flights, or famous journeys of exploration. The word is more formal than everyday travel vocabulary.
覚え方のコツ Memory Tip
まず navigation が「航海・航行」だと分かれば、語の中心はそこです。そこに circum- が付く語は circumference などと同じく「ぐるりと周囲を回る」感覚を足すので、circumnavigation で「周りを航行する」→典型的には地球一周、とつなげると覚えやすいです。navigation だけなら航行一般、voyage なら旅そのものですが、circumnavigation は一周して戻るスケール感が強い名詞です。動詞 circumnavigate も一緒に見て、make a circumnavigation of the globe の形で覚えると定着します。
The key part is `navigation`, which means sailing or travel by sea. Add `circum-`, the same idea as in `circumference`, meaning around. So `circumnavigation` is navigation all the way around something, especially around the world.
例文
Magellan's circumnavigation of the globe took three years.
マゼランの世界一周航海は3年かかった。
The circumnavigation proved that the Earth was round.
世界一周航海は地球が丸いことを証明した。
Modern circumnavigation by ship is much faster than historical voyages.
現代の船による世界一周航海は歴史的な航海より遥かに速い。
circumnavigation の類義語・関連語
circumnavigation の語源・成り立ち Etymology
circumnavigation は circum-「周囲に」+ navigation「航海」で成る語です。circum はラテン語で「まわり」を表し、navigation は navigare「船で進む」に由来するので、「周囲を船で回る」から「周航」になります。関連語は circumnavigate, naval。
"Circumnavigation" is built from circum-, meaning "around," and navigation, meaning travel by ship. Both parts come from Latin: circum means "around," and navigation goes back to navigare, "to sail." The original sense was sailing around something, which later became the general idea of traveling all the way around the world or another place. Related words include circumnavigate and naval.
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