a particular kind of commercial enterprise | an undeveloped field of study; a topic inviting research and development |
a place where planes take off and land | a wilderness at the edge of a settled area of a country |
a branch of knowledge | an international boundary or the area (often fortified) immediately inside the boundary |
the area that is visible (as through an optical instrument) | |
(mathematics) a set of elements such that addition and multiplication are commutative and associative and multiplication is distributive over addition and there are two elements 0 and 1 | |
all of the horses in a particular horse race | |
all the competitors in a particular contest or sporting event | |
(computer science) a set of one or more adjacent characters comprising a unit of information | |
a piece of land cleared of trees and usually enclosed | |
somewhere (away from a studio or office or library or laboratory) where practical work is done or data is collected | |
a piece of land prepared for playing a game | |
a region in which active military operations are in progress | |
a region where a battle is being (or has been) fought | |
a geographic region (land or sea) under which something valuable is found | |
extensive tract of level open land | |
the space around a radiating body within which its electromagnetic oscillations can exert force on another similar body not in contact with it | |
a particular environment or walk of life | |