Forest
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Microsoft Active Directory
A group of one or more Active Directory trees that trust each other. All trees in a forest share a common schema, configuration, and global catalog. When a forest contains multiple trees, the trees do not form a contiguous namespace. All trees in a given forest trust each other through transitive bidirectional trust relationships. Unlike a tree, a forest does not need a distinct name. A forest exists as a set of cross-referenced objects and trust relationships known to the member trees. Trees in a forest form a hierarchy for the purposes of trust.
See also: namespace, transitive trust relationships, tree
A collection of one or more Active Directory domain trees that share a common schema, configuration, and global catalog and are linked with two-way transitive trusts.
Active Directory global security boundary, the largest single partition for any given database structure. AD protects the schema and the database structure.
Climate Change
Terrestrial ecosystem (biome) with enough average annual precipitation (at least 76 centimeters or 30 inches) to support growth of various species of trees and smaller forms of vegetation.
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Microsoft Exchange 2003
One or more Active Directory domains that share the same class and attribute definitions (schema), site and replication information (configuration), and forest-wide search capabilities (global catalog). Domains in the same forest are linked with two-way, transitive trust relationships. [Exchange 2003]