What does coxa mean?
The word 'coxa' denotes the hip — in human anatomy, the hip bone or hip joint where the femur meets the pelvis. It is a formal term drawn from Latin and appears chiefly in medical and scientific writing, as in conditions such as coxa vara and coxa valga, which describe deformities of the angle of the femoral neck. In entomology, 'coxa' has a second, well-established sense: it names the basal segment of an insect's leg, the point at which the limb attaches to the thorax, followed outward by the trochanter, femur, tibia, and tarsus. The adjective form is 'coxal', as in the coxal joint. Because it derives directly from the everyday Latin word for 'hip', 'coxa' offers a clear example of how anatomical terminology preserves classical vocabulary. Though unfamiliar to most general readers, it is precise, unambiguous, and widely understood across the biological sciences.
The hip bone or hip joint in human anatomy.
"The radiologist examined the coxa for signs of dysplasia."
Usually found in clinical or academic contexts rather than casual speech.
In entomology, the basal segment of an insect's leg by which it attaches to the thorax.
"The coxa of the grasshopper's hind leg articulates smoothly with the pleuron."
The standard plural follows Latin morphology; 'coxas' occasionally appears but 'coxae' is preferred in scientific literature.
"Both coxae showed symmetric wear consistent with the patient's age."
Your 'coxa' is literally the Latin word for 'hip' — ancient Romans were naming that joint two millennia before modern anatomy textbooks existed.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of coxa
'Coxa' comes directly from Latin 'coxa', meaning 'hip' or 'haunch', which anatomists adopted as a technical term during the Renaissance revival of classical learning. The Latin word traces back further to Proto-Indo-European roots shared with other ancient European languages. Its descendants in English are mostly scientific derivatives such as 'coxal', 'coxalgia' (hip pain), and 'coxitis' (inflammation of the hip joint), reflecting its enduring role in medical nomenclature.
Related word forms
How coxa is actually used
A technical term used almost exclusively in medicine, anatomy, zoology, and entomology; rarely encountered in everyday speech. The standard plural is the Latinate 'coxae'.
Easily confused with coxa
The coccyx is the tailbone at the base of the spine, whereas the coxa is the hip bone or hip joint at the junction of the pelvis and femur.
Coax is a verb meaning to gently persuade, while the coxa is an anatomical structure; they differ in meaning entirely despite similar spelling.