look·​up | \ ˈlu̇k-ˌəp How to pronounce lookup (audio) \
variants: or look-up

Definition of lookup

 (Entry 1 of 2)

: an act, process, or instance of looking something up (as in a reference work or listing) dictionary lookups a price look-up

look up

looked up; looking up; looks up

Definition of look up (Entry 2 of 2)

intransitive verb

1 : to cheer up look up—things are not all bad
2 : to improve in prospects or conditions business is looking up

transitive verb

1 : to search for in or as if in a reference work look up an address
2 : to seek out especially for a brief visit look me up when you're here

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Examples of lookup in a Sentence

Verb be sure to look me up if you're ever in town by the next morning, the skies had begun to clear and we were looking up
Recent Examples on the Web: Noun Also currently, a receipt or item lookup using a credit card is required in most instances. Kelly Tyko, USA TODAY, "Bed Bath & Beyond 20% coupon: What shoppers need to know about the popular discount amid upcoming store closings," 10 July 2020 Using what Google calls Secure DNS, Chrome will now encrypt the DNS lookup using HTTPS as well. Mark Hachman, PCWorld, "Google redesigns Chrome privacy settings, adds Enhanced Safe Browsing," 19 May 2020 By sending devices to DNS servers that provide fraudulent lookups, attackers can redirect people to malicious sites that serve malware or attempt to phish passwords. Dan Goodin, Ars Technica, "New attack on home routers sends users to spoofed sites that push malware," 25 Mar. 2020 On the former point, Google plans to follow Mozilla Firefox's lead in encrypting people's website lookup queries by default. Robert Hackett, Fortune, "Google’s crown is Chrome," 26 Feb. 2020 Any time your browser attempts a DNS lookup, that request can pass across multiple servers. Wired, "A Controversial Plan to Encrypt More of the Internet," 9 Oct. 2019 Also today, a receipt or item lookup using a credit card is required in most instances. Kelly Tyko, USA TODAY, "Bed Bath & Beyond 20% coupon: What shoppers need to know about the discount amid store closings," 24 Jan. 2020 Again, the solution is to ensure that the pattern of data lookups remains consistent regardless of the bits of the key. Peter Bright, Ars Technica, "Hyperthreading under scrutiny with new TLBleed crypto key leak," 25 June 2018 The sample was supplemented with additional phone number lookups. Barbara Rodriguez, USA TODAY, "Iowa voters split on impeachment in latest Iowa Poll; nearly half don't want Trump removed," 12 Jan. 2020 Recent Examples on the Web: Verb Get somewhere darker, like the suburbs, and look up and to the north to see the shower. Abigail Rosenthal, Houston Chronicle, "The Perseid meteor shower peaks soon. Here's how you can see it," 6 Aug. 2020 Long considered a prime place to look up at the stars, Stub Stewart has made all nighttime stargazing temporarily off-limits as part of its limited reopening during the pandemic. oregonlive, "How do you find social distance at outdoor recreation areas? It’s all about timing," 1 Aug. 2020 The page does a have feature to look up the serial number based on your email and home address. Jeff John Roberts, Fortune, "Apple pledged $25 to iPhone users over battery problems. Why is it so hard to collect?," 1 Aug. 2020 Because Indians look up to the American culture, the series could have helped to break these shackles. Gurki Basra, refinery29.com, "Don’t Judge Arranged Marriages From Watching Indian Matchmaking On Netflix," 29 July 2020 To catch the best meteor shower of the year, simply go outside and look up. Isabel Garcia, House Beautiful, "August Is Full of Celestial Events—Here’s What You Can See in the Sky This Month," 28 July 2020 Many little girls look up to you and your teammates. Sean Keeler, The Denver Post, "Meet Alexis Vasquez, the DU gymnast who beat depression while helping others do the same," 9 Feb. 2020 For readers curious about any particular arts group or company, this story provides an interactive way to look up how much PPP money groups received. Michael Granberry, Dallas News, "Here’s how much Dallas arts groups received in PPP loans — and how it affected jobs," 10 July 2020 Harbaugh understands that some folks look up to his players. Shawn Windsor, Detroit Free Press, "Jim Harbaugh knows this: If his players can wear a mask, so can you," 9 July 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'lookup.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of lookup


1948, in the meaning defined above


14th century, in the meaning defined at intransitive sense 1

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Learn More about lookup

Time Traveler for lookup

Time Traveler

The first known use of lookup was in the 14th century

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Statistics for lookup

Last Updated

16 Jul 2020

Cite this Entry

“Lookup.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lookup. Accessed 15 Aug. 2020.

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