a facility that provides a source of water | an artifact that is one of the individual parts of which a composite entity is made up; especially a part that can be separated from or attached to a system |
a liquid necessary for the life of most animals and plants | an abstract part of something |
the part of the earth's surface covered with water (such as a river or lake or ocean) | the most favorable environment for a plant or animal |
binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent | a straight line that generates a cylinder or cone |
liquid excretory product | the situation in which you are happiest and most effective |
once thought to be one of four elements composing the universe (Empedocles), associated with the humour phlegm | any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter |
| one of four substances thought in ancient and medieval cosmology to constitute the physical universe |