Origin of q.t.
Examples from the Web for qt
The heater when connected to a current supply and placed in 1 qt.
The integrals expressing the area generated by QT have to be expanded in a series.
I was only about as upset as that spilled milk that was cried over and no wonder at 18 cents a qt.Believe You Me!|Nina Wilcox Putnam
Stops, A, are placed in the casing at the right places for each pocket to spill when exactly 2 qt.
I gote noe news since I seed you, only qt wee had before about the Spainyard's is like to continue.Rob Roy, Volume 1., Illustrated|Sir Walter Scott
abbreviation for plural qt or qts
abbreviation for informal
slang for "quiet," in phrase on the q.t., attested from 1874. Phrase on the quiet appears from 1847.
see on the Q.T.