ジャイロ
解説 Definition
gyroscope の略。回転を利用して向きや姿勢を検出・維持・安定させる装置（ジャイロスコープ）。工学、航法、航空、電子機器などで用いる。
A gyro is a gyroscope or a gyroscopic device that uses rotation to detect, maintain, or stabilize orientation. The shortened term is common in engineering, navigation, aviation, and discussions of motion sensors in electronic equipment.
覚え方のコツ Memory Tip
gyro はこの語義では gyroscope の短縮形で、回転を利用して向きや姿勢を検出・安定化する装置を指します。ギリシャ語 gyros「円・回転」を核に、gyroscope や gyrate の「ぐるりと回る」像を重ねましょう。航空機・船・スマートフォンなどの navigation gyro、stabilizing gyro が典型で、料理の gyro「ギロ」とは発音も語義も区別します。
Treat gyro here as the shortened form of gyroscope. Both begin with gyro-, an element associated with a circle or turning, so picture a rapidly spinning wheel that resists changes in its orientation. That image explains why a gyro can guide an aircraft, stabilize a vessel, or help a device sense movement. Common combinations include navigation gyro, gyro sensor, and stabilizing gyro. Do not confuse this technical word, usually pronounced with an initial “j” sound, with gyro meaning the Greek-style sandwich, which is often pronounced differently in English and belongs to a separate everyday context.
例文
The drone's gyro helps it stay level.
ドローンのジャイロは機体を水平に保つのに役立つ。
The technician replaced a faulty gyro in the navigation system.
技術者は航法システムの故障したジャイロを交換した。
This phone uses a gyro to detect rotation.
このスマートフォンは回転を検知するためにジャイロを使う。
gyro の類義語・関連語
gyro の語源・成り立ち Etymology
古代ギリシャ語の「gyros（円）」から派生した語根「gyro-」に由来します。この「回る」核心イメージが、姿勢を安定させる回転装置の意味に直結します。同じ語根の「gyroscope」や「gyrate」も円運動の概念を共有しています。
In the device sense, gyro is an abbreviation of gyroscope. Gyroscope was formed from Greek gyros, “ring, circle, or round,” and skopos, “watcher,” or the related verb meaning “to look at.” The shortened form preserves the element expressing circular motion. It became useful as a compact technical name for gyroscopic instruments and components. Related words such as gyrate also carry the idea of turning or moving in a circle, reinforcing the central image of rotation.
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