A broad, level, open expanse of land. A meadow: a field of buttercups. A cultivated expanse of land, especially one devoted to a particular crop: a field of corn. A portion of land or a geologic formation containing a specified natural resource. A wide unbroken expanse, as of ice. A battleground. A battle. The scene or an area of military operations or maneuvers. A military area away from headquarters. A background area, as on a flag, painting, or coin: a blue insignia on a field of red. Heraldry The background of a shield or one of the divisions of the background. Sports An area in which an athletic event takes place, especially the area inside or near to a running track, where field events are held. Sports The portion of a playing field having specific dimensions on which the action of a game takes place. Sports All the contestants or participants in an event, especially all the contestants except the favorite or the winner in a contest of more than two. Sports The members of a team engaged in active play. Sports The body of riders following a pack of hounds in hunting. An area of human activity or interest: several fields of endeavor. A topic, subject, or area of academic interest or specialization. Profession, employment, or business. An area or setting of practical activity or application outside an office, school, factory, or laboratory: biologists working in the field; a product tested in the field. An area or region where business activities are conducted: sales representatives in the field. Mathematics A set of elements having two operations, designated addition and multiplication, satisfying the conditions that multiplication is distributive over addition, that the set is a group under addition, and that the elements with the exception of the additive identity form a group under multiplication. Physics A region of space characterized by a physical property, such as gravitational or electromagnetic force or fluid pressure, having a determinable value at every point in the region. The usually circular area in which the image is rendered by the lens system of an optical instrument. Also called field of view. Computer Science A defined area of a storage medium, such as a set of bit locations or a set of adjacent columns on a punch card, used to record a type of information consistently.