IPA: /ˌdiː.kɒn.sɪˈkreɪ.ʃən/
KK: /diːˌkɒnsɪˈkreɪʃən/
The act of removing the sacred status from a place or object, often through a formal ceremony, making it no longer holy or dedicated to religious use.
The deconsecration of the church allowed it to be repurposed as a community center.
Deconsecration → It is formed from "de-" (meaning down or away) and "consecratio" (from Latin, meaning to make sacred). The word refers to the act of removing the sacred status from something, essentially taking it away from its consecrated state.
Think of 'taking away' ('de-') the 'sacredness' ('consecratio') of a place or object — that's what deconsecration means.