instrumentality that combines interrelated interacting artifacts designed to work as a coherent entity
a group of independent but interrelated elements comprising a unified whole
an organized structure for arranging or classifying
a complex of methods or rules governing behavior
a procedure or process for obtaining an objective
a group of physiologically or anatomically related organs or parts
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
the part of the earth's surface covered with water (such as a river or lake or ocean)
