1 : warming. 2 : the state of being warmed.

Is Calefaction a word?

the act of heating. a heated state.

How do you use Calefaction in a sentence?

The process of heating or warming. 'Such ecological alterations as have been observed as a result of the local calefaction of the river to date appear to be relatively inconsequential. ' 'It is entirely erroneous to say all calefaction is from solar rays directly.