# translational

/tɹænslˈeɪʃənəl/ (UK) · CEFR C1 · Adjective

Source: https://englishreference.com/word/translational
Updated: 2026-05-18

## Definition

relating to the movement of an object in a straight line without rotating. In physics, it describes how an object moves from one place to another without changing its direction.

For teachers: relating to the movement of a body in a straight line without rotation. Often used in the context of mechanics to describe linear motion as opposed to rotational motion.

## Examples

- The translational motion of the car is smooth.
- Engineers must account for both translational and rotational forces when designing the suspension system for a high-speed train.
- The translational velocity of the satellite remains constant in the absence of external forces, while its rotational speed may vary depending on the torque applied by its onboard thrusters.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.