at a sitting

at a sitting

at one time; during one period. (Usually refers to an activity that takes place while a person is seated.) The restaurant could feed only sixty people at a sitting. I can read about three hundred pages at a sitting.
See also: sitting

at a sitting

At one time, during one period. For example, The cruise ship could feed about 500 passengers at a sitting, or We read the entire poem at a sitting. Since the word sitting implies just that posture, the term means "during a period when one is seated and engaged in a single continuous activity."
See also: sitting