English
euhydration
From eu- + hydration.
Proto-Indo-European *h₁su- ‘good’
Proto-Hellenic *ehu- ‘good’
Ancient Greek ἐΰς ‘good, brave, noble’
Ancient Greek εὖ ‘well, good’
English eu-
Today it means
noun Normal level of hydration; absence of hyperhydration or dehydration.
Language periods are conventional ranges, not dates for this word.
Etymograph / euhydration