1. A temple in Athens, dedicated to Athene, frequented by scholars and poets for rehearsal of their works; an institution provided with library, lectureships, and appliances for the encouragement of literary and scientific culture.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• atheneum,
• zthenaeum,
• sthenaeum,
• wthenaeum,
• qthenaeum,
• arhenaeum,
• afhenaeum,
• aghenaeum,
• ayhenaeum,
• a6henaeum,
• a5henaeum,
• thenaeum,
• athneum,
• athenum,
• athenuem,
• athaneum,
• athenaium,
• athenaeaum,
• athenameum,
• athinaeum

• atheneum,
• athenian.

The adjective form of the word "athenaeum" is "athenaeal".

The plural of the "athenaeum" can be the "athenaeums".

The singular of the "athenaeum" can be the "athenaeum".