unicameral
一院制
解説 Definition
一院制の議会構造。単一の立法院のみを持つ政治体制を指します。
Unicameral describes a system of government with only one lawmaking chamber or house. It is most often used when talking about legislatures and political systems. The opposite is bicameral, which has two chambers.
覚え方のコツ Memory Tip
uni- は unicorn や uniform にもある「1つ」の接頭辞です。unicameral は「1つの chamber、つまり議院をもつ」と分解すると、一院制の議会を表す語として覚えやすいです。対語は bicameral（二院制）で、bi- が「2」を表します。camera と見た目は似ていますが、ここでは政治制度の chamber「議院」と結びつけて覚えるのが実用的です。
The prefix `uni-` means "one," as in `unicorn` or `uniform`. So `unicameral` is easier to remember as "one chamber," especially if you compare it with `bicameral`, where `bi-` means two. It often appears with words like `parliament` or `legislature`. Do not let the middle part make you think of a `camera` machine.
例文
The unicameral legislature simplified the law-making process.
一院制の立法府は法律制定プロセスを簡素化しました。
Many states adopted unicameral legislatures with only one legislative chamber.
多くの州が、議院を一つだけ置く一院制の立法府を採用しました。
A unicameral parliament has only one legislative chamber.
一院制の議会には、議院が一つしかありません。
unicameral の類義語・関連語
対義語
unicameral の語源・成り立ち Etymology
ラテン語 uni-（一つの）+ camera（部屋、議場）+ -al（形容詞語尾）から。cameraは元々「丸天井の部屋」を意味し、議会の議場を指すようになった。関連語: bicameral（二院制）、chamber（部屋）。「一つの議場だけ」→「一院制」という意味の成り立ち。
Unicameral comes from Latin uni-, meaning "one," and camera, meaning "chamber" or "room," plus the adjective ending -al. Camera originally referred to a room with a vaulted roof, and later it was used for an assembly chamber. From there, unicameral came to mean having only one legislative chamber, unlike bicameral.
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