ADX is a specific Trading coordinate in the Bitcoin knowledge graph. In practical terms, it identifies the subject described here: A directional-movement-derived measure of trend strength, not trend direction. This definition is narrower than promotional usage and should be read together with the implementation, date and evidence attached to the entry.
ADX is best understood as part of a system rather than as an isolated definition. Its related coordinates show the mechanisms, incentives and historical records that give the term practical meaning.
ADX describes how participants value, trade or obtain exposure to bitcoin. Market behavior can affect adoption and mining economics, but it does not rewrite consensus rules. Price evidence and protocol evidence answer different questions.
Understanding ADX helps distinguish a verifiable Bitcoin mechanism or historical record from slogans, products and market narratives.
Primary or authoritative records make these details checkable: Wilder's Average Directional Index is derived from smoothed positive and negative directional movement and true range; ADX measures estimated trend strength, while +DI and −DI carry direction; period and smoothing rules materially change the series. They should be verified before using the coordinate in analysis.
The practical limit is: ADX does not predict direction or guarantee persistence; a high reading can occur near trend exhaustion and a low reading can precede movement; thresholds need out-of-sample testing with fees and execution. A definition, office, chart pattern or published claim is not by itself a prediction or Bitcoin consensus rule.
For the clearest picture, read this entry together with Trend following, Range trading, Technical indicator, Technical analysis, Average True Range, Backtesting. The reverse links also lead from Average True Range.