IPA: /dɪˈmɒlɪʃmənt/
KK: /dɪˈmɑːlɪʃmənt/
The act of tearing down or destroying a building or structure.
The demolishment of the old factory made way for a new park.
Demolishment is formed from "de-" (meaning down or away) and "moliri" (meaning to build or to construct). The word describes the act of taking down or destroying a structure that has been built.
Think of 'taking down' ('de-') something that was 'built' ('moliri') — that's why demolishment means the act of destroying a building.