What does innervate mean?
To innervate is to supply something with the nerves needed for sensation, movement, or control. In anatomy and medicine, the verb describes the relationship between a nerve and the muscle, organ, or body part it serves: for example, a particular nerve may innervate the muscles of the face. The word can also be used figuratively for anything that gives energy, stimulation, or direction to a person, process, or creative effort. Its precise technical meaning emphasizes an existing network of connections, whereas figurative uses suggest activation without necessarily implying a literal physical connection. The term is especially useful when discussing how the nervous system organizes bodily function, but its broader connotation of invigorating or prompting activity can lend an exact, technical tone to discussion of ideas, projects, and organizations. Because it derives from the same Latin root as nerve and nervous, the word clearly signals its connection with neural activity.
verbTo supply a body part or organ with nerves, enabling sensation and voluntary or involuntary control. In figurative use, it means to stimulate or energize something.
- To supply a body part, organ, or tissue with nerves.
- To stimulate, activate, or give vitality to something.
"The facial nerve innervates the muscles of expression."
"Motor neurons innervate skeletal muscle throughout the body."
"A fresh idea can innervate an otherwise stalled discussion."
The brain does more than send commands: its nerves continually carry sensory information back, and “innervate” names the wiring that makes a living body responsive.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does innervate come from?
Innervate derives from Latin innervāre, formed from in- “into or upon” and nervus “nerve, sinew.” The verb originally referred to supplying a body part with nerves or imparting nervous energy. Its English form developed in the 19th century alongside the developing vocabulary of anatomy, physiology, and neurology. Related English words, including nerve, nervous, and neural, continue to reflect the same Latin root.
Related word forms
How innervate is actually used
The literal sense is most common in medicine and biology. The figurative sense is formal and relatively uncommon, suggesting the imparting of energy, activity, or direction.