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definitions
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q.l.

  1. (in prescriptions) as much as is desired.
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Origin of q.l.

From the Latin word quantum libet
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for q.l.

q.l.

abbreviation for (in prescriptions)
  1. quantum libet
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Word Origin for q.l.

Latin: as much as you please
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

q.l. in Medicine

q.l.

abbr.
  1. quantum libet (as much as desired)
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.