chemical element, element - 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

argonon, inert gas, noble gas - any of the chemically inert gaseous elements of the helium group in the periodic table

air - a mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of; "air pollution"; "a smell of chemicals in the air"; "open a window and let in some air"; "I need some fresh air"

area unit, square measure - a system of units used to measure areas

hectare - (abbreviated `ha') a unit of surface area equal to 100 ares (or 10,000 square meters)

Hot Springs National Park - a national park in Arkansas featuring ancient hot springs; bathing is said to have therapeutic effects

American state - one of the 50 states of the United States

U.S.A., United States, United States of America, US, USA, America, U.S. - North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776

Confederacy, Confederate States, Confederate States of America, Dixie, Dixieland, South - the southern states that seceded from the United States in 1861

Fayetteville - a university town in northwestern Arkansas in the Ozarks

Fort Smith - a town in western Arkansas on the Arkansas River at the Oklahoma border

Hot Springs - a town in west central Arkansas; a health resort noted for thermal springs

Jonesboro - a town in northeast Arkansas

capital of Arkansas, Little Rock - the state capital and largest city of Arkansas in the central part of Arkansas on the Arkansas River

Pine Bluff - a town in southeast central Arkansas on the Arkansas River

Texarkana - a town in southwest Arkansas on the Texas border adjacent to Texarkana, Texas

Arkansas River, Arkansas - a river that rises in the Rocky Mountains in Colorado and flows southeast through Kansas and Oklahoma and through Arkansas to become a tributary of the Mississippi River

Ouachita, Ouachita River - a river that rises in western Arkansas and flows southeast into eastern Louisiana to become a tributary of the Red River

Ozark Mountains, Ozark Plateau, Ozarks - an area of low mountains in northwestern Arkansas and southeastern Missouri and northeastern Oklahoma

Saint Francis River, St. Francis River, Saint Francis, St. Francis - a tributary of the Mississippi River that rises in Missouri and flows southeastward through Arkansas

White River, White - a tributary of the Mississippi River that flows southeastward through northern Arkansas and southern Missouri