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宇宙速度 (うちゅうそくど) Japanese meaning | Kotomora
Meanings 1
noun
cosmic speed ; escape velocity ; orbital velocity
Technical term in physics and space engineering. Often used in compounds like 第一宇宙速度 (first cosmic velocity, i.e., orbital velocity) and 第二宇宙速度 (second cosmic velocity, i.e., escape velocity).
ふ
り
切き
る
ため
に
第だい
二に
宇う
宙ちゅう
速そく
度ど
に
達たっ
する
必ひつ
要よう
が
ある
。
The rocket needs to reach the second cosmic velocity to escape Earth's gravity.
Kanji 度 degrees, occurrence, time Similar words 脱だっ 出しゅつ 速そく 度ど 脱出速度 specifically means 'escape velocity', while 宇宙速度 is a broader term covering both orbital and escape velocities in the context of space travel.
軌き 道どう 速そく 度ど 軌道速度 means 'orbital velocity' in a general sense, whereas 宇宙速度 is used in the specific framework of cosmic velocities (first, second, third).
Etymology Compound of 宇宙 (space, cosmos) and 速度 (speed, velocity). A calque from English 'cosmic speed' or 'space velocity', used in physics to describe the velocities required for orbiting or escaping a celestial body.
