poststudy adjective 1noun 1forms 1 adjective1 •Of, or pertaining to the time after a study. noun1 •A small study undertaken after a larger one.Pre- and poststudies using CT may enable us to understand which components of lung disease are reversible, for example, airway wall thickening, and facilitate targeted, lower radiation, limited scans. — 2015 formspoststudies