(in prescriptions) each hour; every hour.
Read more in this article about some frequently asked questions and fun facts related to our definitions.
A Brief History of the Letter H
Though it’s a high-value letter in Scrabble and Words with Friends, H is a relatively common letter. Statistically speaking, it is the eighth most commonly used letter in the English language. That’s because H is usually paired with other consonants like wh, ch, sh, and gh. H is found in the most common two-letter pair (th) and in the most common three-letter combination (the). (The letter …
Origin of q.h.
From the Latin word quāque hōrā
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
quaque hora (every hour)
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.