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(in prescriptions) three times a day.
Origin of t.i.d.
From the Latin word ter in diē Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for t.i.d.


abbreviation (in prescriptions)
ter in die
Word Origin
Latin: three times a day
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
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t.i.d. in Medicine

t.i.d. abbr.
Latin ter in die (three times a day)

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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