シリウス
解説 Definition
Sirius は Sirius と書く恒星の名前で、おおいぬ座にある非常に明るい星です。固有名詞として、天文学や星座の話題で使われます。
Sirius is the brightest star visible in Earth’s night sky and is located in the constellation Canis Major. It is a proper astronomical name, also traditionally known as the Dog Star.
覚え方のコツ Memory Tip
Sirius はおおいぬ座の明るい恒星で、the brightest star in the night sky という説明と結び付けます。古代ギリシャ語の「焼けつく、ぎらつく」に関係し、強い輝きを連想すると覚えやすい語です。Canis Major、Dog Star、冬の夜空という三つの手掛かりで位置と名称を定着させましょう。
Remember Sirius through three connected clues: brightness, the dog, and winter. It is the brightest star in the night sky, belongs to Canis Major, the Great Dog, and is especially easy to notice on clear winter evenings in the Northern Hemisphere. Its ancient name is associated with scorching or glittering, which suits its striking appearance. Link it with the traditional title the Dog Star and with star-chart phrases such as Sirius in Canis Major. As an astronomical proper name, Sirius normally begins with a capital letter.
例文
Sirius is easy to notice on a clear winter night.
シリウスは晴れた冬の夜に見つけやすい星です。
The teacher pointed to Sirius during the astronomy lesson.
先生は天文学の授業中にシリウスを指し示しました。
Many star charts show Sirius near the constellation Canis Major.
多くの星図では、シリウスがおおいぬ座の近くに示されています。
sirius の類義語・関連語
類義語
派生語
紛らわしい語
sirius の語源・成り立ち Etymology
ラテン語Siriusを経て、ギリシャ語Seirios「焼けつくもの・ぎらつくもの」にさかのぼる星名です。古代にはこの星の出現が酷暑と結びついたため、「シリウス」はそのまま「灼けるほど熱い星」という感覚で理解できます。関連語にSirian、dog daysがあります。
English Sirius comes through Latin Sirius from Greek Seirios, a name commonly understood as “scorching” or “glowing.” Ancient Mediterranean observers associated the star’s seasonal appearance with the hottest part of summer. This connection also lies behind its traditional association with the “dog days,” since Sirius is the prominent star of Canis Major, the Great Dog. The astronomical name has been retained with little change in modern English.
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