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.
However, the street address for Mount Rainier National Park (55210 238th Avenue East) leads to the Mount Rainier Administration Building in Ashford, Washington, NOT to the Nisqually entrance of the park. To reach the Nisqually entrance using GPS use the address 39000 State Route 706 E, Ashford, WA 98304.