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q.i.d.

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  1. (in prescriptions) four times a day.

Origin of q.i.d.

From the Latin word quater in diē
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
q.i.d. in Medicine

q.i.d.

abbr.
  1. quater in die (four 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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