Typically when we talk about the back we talk about a particular part of the back, such as sacral, lumbar, thoracic, etc. But if you are looking at a term for the back of something in general, the term would be dorsal or posterior. In contrast, the generic term for the front of something is ventral or anterior.
Cystorrhaphy is the medical term meaning suture of the bladder.
Pyoureter is the medical term meaning pus in the ureter.
Submandibular is the medical term meaning under the lower jaw.
sternocostalsternocostalSternocostal
Flexing is the medical term meaning decreasing an angle as in bending a joint.
Dorsal is the medical term meaning back.
Dorsum is a medical term meaning back. For example the dorsum of the hand is commonly known as the back of the hand.
Dorsal
Posterior.
Posteroanterior means from back to front.
Dorsalgia is the medical term meaning back pain. It is not a frequently used word.
Lumbarlumbar areaLumbar.
Adenoids
Anacusis is the medical term meaning complete deafness.
Syncope is the medical term meaning fainting.
Lamina is the medical term meaning layers.
lumbosacral