See Also: costal arch reflex(medicine)
costal arch(medicine)
costal(medicine)
costal(dictionary)
costal fringe(medicine)
costal respiration(medicine)
costal groove(medicine)
costal facets(medicine)
costal process(medicine)
costal margin(medicine)

tertius (iou) and costal arch reflex (medicine)


tertius (iou)



tertius adjective. E19.
[Latin = third.]
Designating the youngest (in age or standing) of three people, esp. pupils, with the same surname. (Appended to a surname and used esp. in public schools.) Cf. PRIMUS adjective 2, SECUNDUS.

costal arch reflex (medicine)


costal arch reflex
Contraction of the rectus abdominis muscle by tapping the costal margin inside the mammary line.