qt.

[8.31] The meaning of the abbreviation "qt." is not clear; it may have stood for "quantity" or "quartered."

Inventory of Robert Carter's Estate, November [1733] 1733

Pour cooled tea into a large, glass container I use a big, 4 qt. ball jar.

One For The Table: Homemade Kombucha One For The Table 2012

In a 3-qt. saucepan, melt the butter over medium heat until it becomes light brown.

TIME.com: Top Stories 2009