do something in/at one sitting

at one sitting

During one uninterrupted period of time. Our teenage sons can finish a whole turkey at one sitting. How much research can you get done at one sitting?

See also: one, sitting

at one sitting

or

in one sitting

COMMON If you do something at one sitting or in one sitting, you do not stop doing it until you have finished it. He sometimes reads a whole novel at one sitting. She can go through a whole box of cookies in one sitting.

See also: one, sitting

do something in/at one ˈsitting

do something in one continuous period of activity, without getting up from your chair: I read the book in one sitting.

See also: one, sitting, something