Plural of centrality; multiple instances or aspects of being central or most important.
From centrality + -ies (plural suffix). Centrality comes from central + -ity (suffix forming nouns of state or condition). Multiple centralities appear in academic and technical writing.
In network science, different centralities (like 'betweenness centrality' or 'degree centrality') measure which nodes are most important in different ways—a person might be central to one thing but peripheral to another.
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