"of or pertaining to humerus; of or pertaining to the or the shoulder," 1610s; see humerus + -al (1).
Entries linking to humeral
humerus n.
1706, "bone of the upper arm," originally (14c.) "shoulder," from Latin humerus, a common spelling of umerus "shoulder," from PIE *om(e)so- "shoulder" (source also of Sanskrit amsah, Greek ōmos, Old Norse ass, Gothic ams "shoulder"). Blount's "Glossographia" (1656) has humerous (adj.) "That hath great shoulders."
-al 1
suffix forming adjectives from nouns or other adjectives, "of, like, related to, pertaining to," Middle English -al, -el, from French or directly from Latin -alis (see -al (2)).