costal
UK[ˈkɒstl]US[ˈkɑːstl]
adj
Relating to the ribs.
Morpheme Breakdown
cost
al
cost
rib
al
adjective suffix
Etymology
The word 'costal' is a direct anatomical term formed in scientific Latin from the classical Latin noun 'costa,' meaning 'rib' or 'side.' The suffix '-alis' is a productive Latin adjectival suffix used to form words meaning 'of or pertaining to.' Therefore, 'costal' literally means 'pertaining to the ribs.' This logical construction was adopted into English in the late Middle English period to serve the precise needs of medical and anatomical description, maintaining a clear and direct link to its Latin source.
Analysis
Structure: cost (rib) + al (adjective suffix)
cost (from Latin 'costa' meaning 'rib, side'), al (from Latin adjectival suffix '-alis' meaning 'pertaining to').
Examples
The surgeon made an incision along the costal margin.
Costal cartilage connects the ribs to the sternum.
He experienced sharp pain in his left costal region after the impact.