informationsystem

As a noun denotation is

the act of denoting, or something (such as a symbol) that denotes.

As a noun system is

system.

Informationsystem is often a misspelling of informatics.

Informationsystem has no English definition.

As a noun informatics is

a branch of information science and of computer science that focuses on the study of information processing and particularly as respect to systems integration and human interactions with machine and data.