Definition of "top-level" []

• Of or relating to people of the highest office or rank. (adjective)
• Of or relating to the highest office or rank: a top-level job. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "In some cases, the ontologies developed are domain-specific (e.g. specific to medical information, geographic information, etc.), but there has also been a great deal of interest in developing a ˜top-level™ ontology of maximally general categories applicable to all specific domains; it is such top-level ontologies that draw upon philosophical work on ontological categories most directly, although categorial distinctions also play a crucial role in domain-specific ontologies."
• "The edu component is referred to as the top-level domain TPL, as it is the highest level of grouping to which this name space belongs."
• "The new rules affect what the industry calls top-level domain names, the familiar dot-coms and dot-nets that end every Web address."