different between hydro vs hydron

English

From Ancient Greek ???? (húd?r, “water”).

hydro (not comparable)

hydro (countable and uncountable, plural hydros)

(uncountable) hydroelectric power
(Canada, uncountable) electrical power supply; specifically, electrical power provided by a utility (as a publicly-owned one); payment or bills for this.
I won't have lights until my house gets the hydro turned on.
She was having trouble paying the hydro.
He crashed his car against a hydro pole.
(Britain, countable, dated) A spa.
- 1909, Rudyard Kipling, The House Surgeon
  She almost lived at hotels and hydros, last year, but that isn't pleasant for her.
(countable, aviation, obsolete) Abbreviation of hydroaeroplane.

hydron (plural hydrons)

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