Discover what hashtags mean, and add your own definitions in seconds
Top Voted Definition for #h2o
Chemical formula representing one molecule of water that has two hydrogen atoms covalently bonded to a single oxygen atom
Help Us Understand What's Happening
Become a Tagdef member to see top tweets using this hashtag (and more)!
- star_border Gain achievements
- star_border Fight your way to the top of the leaderboard
- star_border Profile Page with your submitted definitions
- star_border Special badges, labels and more!