metacromion
/ˌmɛtəˈkrəʊmɪɒn/ /ˌmɛtəˈkrəʊmɪən/Zoology
noun
In some mammals: a process of the spine of the scapula posterior to the acromion.
Origin
Mid 19th century; earliest use found in St. George Mivart (1827–1900), zoologist and Roman Catholic polemicist. From meta- + acromion.