denoting the cavity in the shoulder blade into which the head of the upper arm bone fits
Word origin
C18: from Greek glēnoeidēs, from glēnē socket of a joint
glenoid in American English
(ˈgliˌnɔɪd; ˈglɛnˌɔɪd)
adjective
forming a smooth, shallow cavity or socket for a bone; esp., designating the cavity on the head of the scapula which, together with the head of the humerus, forms the shoulder joint
Word origin
Gr glēnoeidēs < glēnē, socket of a joint, eyeball + -eidēs, -oid