adj. Of or pertaining to options on a stock or equity. For some stocks, it is possible to trade options on them, hence they are optionable, for other stocks options aren't traded so they are not optionable.
Word Usage
"Hollywood producers looking for highly optionable properties, that are clearly reminiscent of past successes ie, this sort of thing has worked before and you can understand it, but new enough to be fresh, I'll make it easy on you."