"lookup." YourDictionary, n.d. Web. 17 August 2018. <http://www.yourdictionary.com/lookup>.
lookup. (n.d.). Retrieved August 17th, 2018, from http://www.yourdictionary.com/lookup
lookup - Computer Definition
A data search performed within a predefined table of values (array, matrix, etc.) or within a data file. The noun is "lookup;" however, the verb is two words; for example, "look up the address." See lookup table and table lookup.