(1) The basic syntactic unit of a computing language. A token consists of one or more characters, excluding the blank character and excluding characters within a string constant or delimited identifier.
(2) In OSI, an attribute of a connection. The token is dynamically assigned to one session-service user at a time to permit certain services to be called. Tokens are a session layer concept.
(3) A value passed as a parameter for the purpose of uniquely identifying objects.
(4) A particular message or bit pattern that signifies permission or temporary control to transmit over a network.
(5) A marker used to track the current state of a process instance during a simulation run.
(6) In checkpoint processing, an identifier that is used to determine checkpoint I/O status.
(7) The basic textual units that are indexed by enterprise search. Tokens can be the words in a language or other units of text that are appropriate for indexing. See also lexical parsing item.