The act of making or becoming firm and stable, or the process of securing something in place.
From Latin 'fidus' meaning firm or faithful, combined with the suffix '-ation' denoting a process or state. The root evolved through Middle English to describe the establishment of permanence or security.
This word shows how Latin root 'fidus' (firm) also gave us 'confidence' and 'fidelity'—all sharing that core idea of stability and trustworthiness that makes sense whether you're securing an object or trusting a person.
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