or look-up

[ look-uhp ]

  1. an act or instance of looking something up, as information in a reference book or an online database.

Origin of lookup

1945–50 for an earlier sense; noun use of verb phrase look up

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use lookup in a sentence

British Dictionary definitions for look up

look up

  1. (tr) to discover (something required to be known) by resorting to a work of reference, such as a dictionary

  2. (intr) to increase, as in quality or value: things are looking up

  1. (intr foll by to) to have respect (for): I've always wanted a girlfriend I could look up to

  2. (tr) to visit or make contact with (a person): I'll look you up when I'm in town

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Idioms and Phrases with lookup


Search for in a book or other source, as in I told her to look up the word in the dictionary. [Late 1600s]

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.