pointing out, showing, or giving a sign that something is true or about to happen.
From Latin 'indicare' meaning 'to point out,' from 'in-' (toward) and 'dicare' (to make known). The root 'dicare' relates to 'dictate' and 'diction.'
The word 'index' comes from the same Latin root—your index finger is literally the 'pointing finger,' and an index in a book does the same job: pointing you toward information.
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