Definition of atom. 1  1a : the smallest particle of an element that can exist either alone or in combination an atom of hydrogenb : the atom considered as a source of vast potential constructive or destructive energy â¦ a largely forgotten legacy of this country's conquest of the atom.
The mountain, a part of the Cascade Range, is a volcano that has not erupted for 2,000 years. It is also the highest mountain in the state of Washington. English explorer George Vancouver named Mount Rainier in honor of another navigator, Peter Rainier. Some people, however, prefer to call the mountain by its Indian name, Mount Tacoma.
Mt. Rainier has granitic and basaltic lava types. It is a stratovolcano or composite volcano. The volcano has 26 major glaciers and 36 snowfields on it. Also, it has a glacier â¦ cave network, the world's largest, made from the heat from two volcanic craters.A relatively small crater lake sit on Mt. Rainier.t. Rainier is part of the Cascade Volcanic Arc, which extends from Northern California north into Canada. These types of volcanoes are most known for their explosive eruption types.