OMGoodness are you serious... You need to back to health class.
It refers to the back
The terminology of modern times concerning military operations were not so common in the days of the US Civil War. General US Grant, for example, was copied by others when his reports were read. He made common the use of the words such as "drive" "push" and "fall back". These military terms were part of Grant's vocabulary sometime after his victory at Vicksburg.
By waves
The medical terminology combining form meaning lower back is "lumb/o" or "lumb".
Always front to back. Always.
Anteroposterior means relating to both front and back, there is no prefix.
The owner/operator causes the filter to be back washed by turning the lever to the appropriate setting and turning on the pump. This is done periodically to unclog the filter.
Washed up unless he comes back to Canada and learns how to act like a man
Ankylo- is the medical terminology combining form meaning stiffening. For instance, ankylosis spondylosis is a back condition that results in stiffening of the back.
"Dorsi-" means back.
dorsi, dorso, postero