Both Uses of
derive
in
The Black Cat
- From my infancy I was noted for the docility and humanity of my disposition. My tenderness of heart was even so conspicuous as to make me the jest of my companions. I was especially fond of animals, and .... This peculiarity of character grew with my growth, and in my manhood, I derived from it one of my principal sources of pleasure.†
*
- To those who have cherished an affection for a faithful and sagacious dog, I need hardly be at the trouble of explaining the nature or the intensity of the gratification thus derivable.
derivable = able to be gotten (from something else)standard suffix: The suffix "-able" means able to be. This is the same pattern you see in words like breakable, understandable, and comfortable.
Definition:
-
(derive) to get something from something else
(If the context doesn't otherwise indicate where something came from, it is generally from reasoning--especially deductive reasoning.)