Every term is defined twice: once the way a filing would put it, and once the way somebody would explain it to you across a table. The second one is usually the one that sticks.
Showing 2 terms
The positive directional indicator — the share of recent price range attributable to upward movement, plotted alongside ADX.
ADX gives strength and no direction whatsoever. Reading a high ADX on its own as bullish is a common and expensive error; this is where the direction comes from.
The negative directional indicator — the share of recent price range attributable to downward movement, plotted alongside ADX.
When it sits above DI+, whatever strength ADX is reporting belongs to a downtrend. An ADX of 45 is equally consistent with a runaway rally and a violent crash.