IPA: /dɪˈraɪvəbl/
KK: /dɪˈraɪvəbl/
Able to be obtained or developed from something else.
The formula for the area of a circle is derivable from the formula for the area of a rectangle.
Derivable → It is formed from "derive" (from Latin "derivare", meaning to draw off or obtain) and "-able" (meaning capable of). The word "derivable" means capable of being drawn from or obtained from a source.
Think of something that can be 'drawn off' ('derive') and is 'capable' ('-able') of being obtained — that's what derivable means.