Definition of "reachable" [reach•a•ble]

• Within easy reach; accessible (adjective)
• (of a node) That may be reached from another node in a graph by passing along one or more lines (adjective)

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• "We give an explanation of the term reachable in the context of Trail NFAs."
• "I prefer the term reachable in the context of EE though simply because the common distinction between first set and follow set is not so important in Trail."
• "His prize in reachable site, he outstretches his arm to grab the little blue mouse."