otic. pertaining to the ear; aural. otic capsule. cartilaginous envelope which surrounds the nervous elements of the embryo's inner ear, and which subsequently ossifies. otic cup.the invagination of the otic placode, destined to form an otic vesicle and ultimately the inner ear.tic capsule. cartilaginous envelope which surrounds the nervous elements of the embryo's inner ear, and which subsequently ossifies. otic cup. the invagination of the otic placode, destined to form an otic vesicle and ultimately the inner ear.