軌跡(きせき)

きせき
noun
trajectory; path; track record
scienceabstract
See also: 奇跡(きせき) (miracle)
1. trajectory; path; track
The path traced by a moving object or point, used in mathematics and physics.
星(ほし)の軌跡(きせき)を追(お)う。
To trace the trajectory of a star.
ボールの軌跡(きせき)をカメラで分析(ぶんせき)した。
The trajectory of the ball was analyzed by camera.
長時間(ちょうじかん)露光(ろこう)で星(ほし)の軌跡(きせき)を撮影(さつえい)すると、美(うつく)しい弧(こ)を描(えが)く写真(しゃしん)になる。
Photographing star trails with a long exposure produces images of beautiful arcs.
2. track record; history of achievements; journey
The course or record of someone's progress, career, or development over time.
バンドの軌跡(きせき)をたどる。
To trace the history of a band.
彼女(かのじょ)の選手(せんしゅ)生活(せいかつ)の軌跡(きせき)が映画(えいが)になった。
The story of her athletic career was made into a movie.
この本(ほん)は戦後(せんご)日本(にほん)の経済成長(けいざいせいちょう)の軌跡(きせき)を詳(くわ)しく描(えが)いている。
This book describes in detail the trajectory of Japan's postwar economic growth.

Compound of 軌(き) (track, rail) + 跡(せき) (trace, mark).

Common collocations

Usage

In the figurative sense, 軌跡(きせき) implies a visible, traceable record of progress or achievement, often used in biography, documentary, and historical writing.

Watch out

The homophone 奇跡(きせき) means miracle; titles such as 「奇跡(きせき)の軌跡(きせき)」 play on the pair.

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Added 2026.2.28 21:15 · Revised 2026.10.20 10:38
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