linea semicircularis -->
arcuate line of rectus sheath
medical dictionary

A crescentic line, not always clearly defined, which marks the lower limit of the posterior layer of the sheath of the rectus abdominis muscle.

Synonyms: linea arcuata vaginae musculi recti abdominis, Douglas' line, linea semicircularis, semicircular line.

(05 Mar 2000)