What does vertebrate mean?
A vertebrate is an animal with a vertebral column, or backbone. The word functions both as a noun, naming a member of the biological group Vertebrata, and as an adjective, as in vertebrate anatomy or vertebrate evolution. Vertebrates include mammals, birds, reptiles, amphibians, and fish, although their size, habitat, diet, and manner of movement vary enormously. The term is especially useful in biology, zoology, palaeontology, medicine, and environmental science, where it distinguishes animals with an internal vertebral framework from invertebrates such as insects, molluscs, and many marine creatures. In general writing, vertebrate can suggest an animal more complex or substantial than an invertebrate, but this is a contextual implication rather than a formal distinction. Its value lies in naming a fundamental structural feature shared across very different kinds of animal. For students and readers, it is also a useful example of a word that has developed from a specialized anatomical label into a broader scientific and educational term.
An animal belonging to Vertebrata, characterized by a vertebral column or backbone.
"The biologist identified the unusual fish as a vertebrate previously unknown to the region."
The standard plural is vertebrates.
Of or relating to vertebrates; having a vertebral column.
"The museum's fossil gallery traces vertebrate evolution across several geological periods."
Commonly used in scientific combinations such as vertebrate anatomy, vertebrate evolution, and vertebrate species.
The standard plural adds -s and retains the final -e.
"Many vertebrates migrate seasonally in response to changes in temperature and food availability."
Every vertebrate carries its structural history on the inside—in the linked column of vertebrae that gives the word its name.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does vertebrate come from?
The English word dates from the early 16th century and comes from Latin vertebratus, formed from vertebrā, a term for a vertebra or joint of the back. The same Latin root underlies related English forms such as vertebral and vertebrated, as well as the French cognate vertébré. Over time, vertebratus developed from a reference to the joints or articulated structure of the back into the biological category meaning an animal possessing a vertebral column.
Related word forms
How vertebrate is actually used
The noun and adjective are both standard in British and American English. In formal biological writing, the capitalized group name Vertebrata may be preferred when referring to the taxonomic division as a whole.
Easily confused with vertebrate
A vertebrate is a whole animal, whereas a vertebra is one of the individual bones or cartilage segments forming the vertebral column.
A vertebrate has a vertebral column, while an invertebrate is an animal that lacks one.