H2O — synonyms, definition

1. H2O (Noun)

water

H2O (Noun) — Binary compound that occurs at room temperature as a clear colourless odourless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent.

binary compound liquid bath water bilge bilge water brine dishwater distilled water floodwater fresh water freshwater ground water hard water holy water limewater meltwater saltwater seawater slush soft water spring water tap water • • • H atomic number 1 atomic number 8 hydrogen o oxygen body of water diamond dust flake frost mist frost snow ice ice crystal ice needle perspiration poudrin snow mist snowflake sudor sweat tear teardrop water water ice