From Longman Dictionary of Contemporary Englishpost-traumatic stress disorderˌpost-traumatic ˈstress disˌorder noun [uncountable] medicalMI (abbreviation PTSD) a mental illness which can develop after a very bad experience such as a plane crash
Examples from the Corpus
post-traumatic stress disorder• All maintain they have never recovered from the incident and suffer from post-traumatic stress disorder.• Under the standard criteria, the children did not qualify for a diagnosis of post-traumatic stress disorder.• During cross-examination by Abramson, Dietz agreed that that condition shares symptoms with post-traumatic stress disorder. 