Pronunciation: [spˈiːnə] (IPA) 
The word "SPINA" is spelled with an "S" followed by a "P" and an "I." The "I" is pronounced with a tense /i/ sound, as in the word "see." The next letter is an "N," which has a voiced /n/ sound. Finally, the word ends with an "A," pronounced as a short /ə/ sound, similar to the last syllable in the word "sofa." In IPA phonetic transcription, the word "SPINA" is written as /ˈspiːnə/.
Spina is a noun that originates from the Latin word for "thorn" or "spine." It refers to a ridge or projecting point resembling a thorn or spine, particularly as found in anatomical structures. In anatomy, spina is commonly used to describe prominent and elongated bony processes that protrude from the surface of a bone. These spines can serve various purposes, such as providing attachment points for muscles or contributing to structural stability.
For example, the term "spina bifida" refers to a birth defect where the neural tube, the embryonic structure that eventually forms the brain and spinal cord, fails to close properly. This condition results in the spinal column not fully developing and often leads to a sac-like protrusion in the midline of the back. In this context, "spina" denotes the spine or spinal column.
Spina can also appear in different contexts. In architecture, a spina is referred to as the central barrier or median in an ancient Roman circus or track. This barrier separated the opposing lanes and often featured decorative elements, such as obelisks or statues.
In summary, spina is a noun primarily used in anatomy to describe prominent and elongated bony processes resembling a thorn or spine. It can also denote the spinal column, or be used outside anatomical contexts, such as in architecture.
1. The spine. 2. Any spine or sharp thorn-like process.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
