A procedure in which a table of values stored in a computer is searched until a specified value is found.(noun)
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.
Use "lookup" in a sentence
"But, on the off chance that the name lookup fails, we will be covered."
"You can see the full list by clicking to SRI International's report here and scrolling down to the table listed under "domain lookup prevention.""
"How to navigate within the content using the interface viewing table of contents, using search tools, finding a citation, using title lookup"