"reifiable" = "able to be reified", where "to reify" means "to make something abstract concrete or real". So, for example, Scheme's call/cc function reifies co

"reifiable" = "able to be reified", where "to reify" means "to make something abstract concrete or real". So, for example, Scheme's call/cc function reifies continuations- it take a continuation, an abstract control-flow concept, and turns it into a concrete object that you can pass around and manipulate in code. Therefore, continuations are reifiable in Scheme.