posttraumaattiseen
Posttraumaattinen is a Finnish adjective meaning post-traumatic, i.e., relating to experiences or effects that follow a traumatic event. The form posttraumaattiseen is the illative singular of the adjective, used when it modifies a noun in the illative case (for example, into post-traumatic stress). In Finnish, adjectives decline to agree with the noun they modify, so posttraumaattinen appears as posttraumaattisen, posttraumaattiseen, and so on.
The term is commonly found in psychology, psychiatry, and trauma research in Finnish. It is used to
Etymology and usage notes: the word is a Danish/English loancalque formed from the prefix post- and the