Relating to or situated on the Caelian Hill, one of the seven hills of ancient Rome.
From Latin Caelianus, derived from Caelus, one of the traditional names for the Caelian Hill. The etymology of the hill's name itself is disputed but may relate to an early inhabitant or deity.
The Caelian Hill was considered less prestigious than the Palatine or Capitoline Hills, so less important Romans built there—which actually preserved more of its original character!
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