Here you will find one or more explanations in English for the word Arenation.
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Arenation
Arenation Ar`e*na"tion ([a^]r`[-e]*n[=a]"sh[u^]n), n. [L.
arenatio, fr. arena sand.] (Med.)
A sand bath; application of hot sand to the body.
--Dunglison.
Meaning of Arenation from wikipedia