Water

"The liquid that descends from the clouds as rain, forms streams, lakes, and seas, and is a major constituent of all living matter and that when pure is an odorless, tasteless, very slightly compressible liquid oxide of hydrogen H2O which appears bluish in thick layers, freezes at 0° C and boils at 100° C, has a maximum density at 4° C and a high specific heat, is feebly ionized to hydrogen and hydroxyl ions, and is a poor conductor of electricity and a good solvent" (Merriam-Webster, 2019)

Sources

Merriam-Webster. "Water", Entry 1(a). (2019). Link: https://www.merriam-webster.com/dictionary/water