Sentence:  At one time one god was a greater favourite with the nation than another, and the cult of the god or gods which the old Babylonians preferred in the early days of their empire frequently fell into disuse and neglect in after times. The most important <WSD>ennead</WSD> among the Babylonians was as follows:— ... 
Meaning of the word marked with <WSD> tags:  Any grouping or system containing nine objects.