From Longman Dictionary of Contemporary Englishat/in one sittingat/in one sittingCONTINUE/NOT STOPduring one continuous period when you are sitting in a chair I sat down and read the whole book in one sitting. → sitting
Examples from the Corpus
at/in one sitting• I devoured it all almost at one sitting, reading it until my eyes closed.• Jeff ate a whole bag of potato chips in one sitting.• As in my landscapes, I work quickly and the portrait has to be completed in one sitting.• But if you get a copy, save it for when you can read it at one sitting.• I read it in one sitting and lay awake that night disturbed by its power and frightened by its implication.• At other times the sessions are intended to serve the need of teachers of five of six languages at one sitting.• It is an interesting book to dip into, but it can not be read at one sitting. 