(adverb when intr, often foll by on) to acquire information about (a subject) by reading intensively
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
How to use read up in a sentence
Cardwell might have been well advised to read up on the entire enterprise.Honey Boo Boo, Snake Oil, and Ebola: The Weird World of Young Living Essential Oils | Kent Sepkowitz | December 5, 2014 | THE DAILY BEAST
It was this, which Malhi read up on during a family trip to India last year, which spurred on his work.
Had they not written the destiny of that babe by the desert spring in the same characters I read up there to-night?Sarchedon | G. J. (George John) Whyte-Melville
I left you to rest and read up La Dame aux Camélias; not meditate on mortality.The Open Question | Elizabeth Robins
I thought yuh knew the horse—the way yuh read up his pedigree—till I seen yuh mount him.The Happy Family | Bertha Muzzy Bower
If the subject cannot read up to the twenty-foot line, nearsightedness or astigmatism is indicated.The Science of Human Nature | William Henry Pyle
I condescended to read up the guide-book, and put myself in the hands of the housekeeper.Memoirs of the Duchesse de Dino v.1/3, 1831-1835 | Dorothy Duchesse de Dino
Other Idioms and Phrases with read up
Study or learn by reading, as in I don't know much about childhood illnesses, but I can always read up on them. [First half of 1800s]
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.