The phrase "direct applicability" means that a rule, law, or principle can be directly and immediately used or applied without the need for any additional interpretation or adaptation. Full definition
It may happen that the principle of direct applicability of EU provisions by national courts — a more specific element of the principle of direct effect and primacy — reaches its limits. (europeanlawblog.eu)
Cardinal George of Chicago then looks at the Evangelisation of Culture, concentrating on the US but with a very direct applicability to the British scene. (faith.org.uk)
«The most direct applicability could be for antibiotic resistance,» Wall says. (sciencedaily.com)