What does vibrissa mean?
Vibrissa is a zoological term for a stiff hair that acts as a sensory organ, particularly one of the prominent whiskers around a cat's muzzle. Such hairs are rooted in follicles and contain nerves that respond to light touch and minute changes in airflow, helping an animal navigate its surroundings. In general English, the singular refers to an individual hair, while the plural vibrissae refers to a group, although vibrissas is also accepted. The word occurs chiefly in anatomy, zoology, veterinary science, neuroscience, and descriptions of animal behavior rather than everyday conversation. It is more precise than whisker because it emphasizes the hair's tactile function: the whisker is the familiar structure, while the vibrissa is the sensory hair itself. The term can also describe comparable touch-sensitive bristles in other mammals and some other animals. Its Latin ancestry gives it a technical resonance, but modern usage is firmly scientific and descriptive.
nounA stiff, touch-sensitive hair projecting from an animal's skin, especially one of the sensitive hairs around a cat's muzzle or another mammal's snout.
- A stiff, touch-sensitive hair on an animal, especially one of the prominent facial hairs of a cat or other mammal.
"The cat moved carefully through the dark, relying on its vibrissae to detect nearby obstacles."
"A single vibrissa can bend when it encounters an object, transmitting the contact to a sensory nerve."
"The scientist recorded the responses of neurons in a region of the brain that processes signals from the vibrissae."
Vibrissae is the standard plural. Vibrissas is also accepted in English.
"The whiskers of the seal are specialized vibrissae used to detect movement in the water."
A cat's vibrissae are not merely decorative whiskers: they are sensitive instruments that can detect minute changes in air currents.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of vibrissa
The English word comes from Latin vibrissa, originally meaning a tuft of hair on the lips of a horse; the Latin word is related to vibrare, “to quiver or vibrate.” It was borrowed into English in the early 17th century and later adopted in zoological terminology for specialized tactile hairs. The same Latin root produced words including vibrant, vibrate, vibration, and vibratory.
Related word forms
How vibrissa is actually used
Chiefly used in zoology, anatomy, veterinary medicine, neuroscience, and formal descriptions of animal behavior. It is more technically precise than whisker because it emphasizes the hair's sensory function. The word is uncommon in everyday speech.