an act or instance of looking something up, as information in a reference book or an online database.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use lookup in a sentence
I scribble the numbers on the paper, and then I look up with a start.
Things began to look up, she said in the post, when she met Phelps, 29, on Tinder.Exclusive: Michael Phelps’s Intersex Self-Proclaimed Girlfriend, Taylor Lianne Chandler, Tells All | Aurora Snow | November 26, 2014 | THE DAILY BEAST
Of all the people to look up to for a back-to-nature stance, why the monster from Spahn Ranch?
But when he finally does look up, it's his eyes that catch my attention.
In the days since our talk, things have started to look up for the Teachout campaign.Can New York Democrat Zephyr Teachout Stop Governor Andrew Cuomo? | David Freedlander | August 18, 2014 | THE DAILY BEAST
I was busy loading the piece when an exclamation of surprise from one of the men made me look up.
So Glavis (he is the Reverend's faithful lieutenant, you know), went out to look up Baptiste and have a talk with him.The Homesteader | Oscar Micheaux
His silence caused her to look up, and in his face she read something of what was passing in his thoughts.St. Martin's Summer | Rafael Sabatini
The faint rustle of the Black Hood's cape caused the messenger on the ground to look up.
The dollar will do to get a room in a hotel for the first night, and in the morning I'll look up Nold or Bauer.Prison Memoirs of an Anarchist | Alexander Berkman
British Dictionary definitions for look up
(tr) to discover (something required to be known) by resorting to a work of reference, such as a dictionary
(intr) to increase, as in quality or value: things are looking up
(intr foll by to) to have respect (for): I've always wanted a girlfriend I could look up to
(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.