What does locomotor mean?
“Locomotor” means relating to movement from one place to another, particularly the movement of the body. It is used most often in medical and biological contexts to describe muscles, organs, or systems that enable locomotion. For example, locomotor muscles include major muscle groups involved in posture and movement, while the term can also refer more broadly to a locomotor system or apparatus. The word is more technical and formal than “movement” or “mobility,” and it can suggest a systematic or physiological capacity for motion rather than movement in the general sense. In medicine, references to locomotor difficulties often indicate problems with walking, coordination, strength, or the muscles and bones that support movement. Its unusual sound also makes it memorable: it is built around the same Latin roots that give us “locomotion” and “locomotive.”
Of or relating to locomotion or movement from one place to another.
"The clinician assessed the patient’s locomotor function."
Common in medical, anatomical, biological, and technical contexts; less usual in everyday speech.
A structure, especially a muscle, that produces locomotion or bodily movement.
"The locomotor was damaged during the operation."
Rare and chiefly used in anatomical or technical writing.
The plural is used rarely, mainly in technical or anatomical contexts.
"Several locomotors were affected by the neurological condition."
The word literally joins “locus,” meaning place, with “motus,” meaning movement: a mover from place to place.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does locomotor come from?
“Locomotor” comes from Latin roots meaning “place” and “movement,” reflecting its association with moving from one place to another. The English form developed in the 19th century, when it became especially useful in anatomical and physiological descriptions. It belongs to the same Latin-derived family as “locomotion,” “locomotive,” and “locomote,” all of which share the idea of movement.
How locomotor is actually used
The word is formal and technical. It is especially common in medicine, physiology, biology, and descriptions of movement systems; ordinary speech usually uses “movement” or “mobility” instead.
Easily confused with locomotor
“Locomotor” is chiefly an adjective describing movement or movement-related anatomy, whereas “locomotive” is an adjective meaning powered by a locomotive and also a noun for a train engine.