From Webster’s dictionary:
1: to cause to take up or combine with water or the elements of water
2: to supply with ample fluid or moisture
From the Greek hydor meaning water
EU bans claim that water can prevent dehydration:
Brussels bureaucrats were ridiculed yesterday after banning drink manufacturers from claiming that water can prevent dehydration.
EU officials concluded that, following a three-year investigation, there was no evidence to prove the previously undisputed fact.
Producers of bottled water are now forbidden by law from making the claim and will face a two-year jail sentence if they defy the edict, which comes into force in the UK next month.